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Before you’ve asked what the hell or who the hell is Polly - Polly is a twitter client. You can install it by executing the following command in terminal:
sudo add-apt-repository ppa:conscioususer/polly-daily && sudo apt-get update && sudo apt-get install polly
Do yourself a favor and give it a shot, with any luck it will blow your mind :)
And now back to the tutorial :P So anyway, when you're finished you will have an amazing wallpaper looking just like this:
Look gorgeous, doesn't it? So by now you should all be impatient to start, so here I go:
All right, first thing you need to do is to get my brushpack from here: http://ubuntuone.com/p/1AQ7/ and extract it to ~/.gimp-2.6/brushes
P.S. (There should only be files and not folders in that directory, so please after you unrar the archive copy the contents of the folders in it, but not the folders themselves)
Than you have to get those two images which you will need to use on later stage: http://ubuntuone.com/3aY7KTkwGfKN5Zj1eRObtJ
And also get this image too, which is also gonna be needed later:
Ok, that was easy, wasn't it? Then time to get to the real part.


Step 1.
That step is nothing special - create new image with size 2560x1600 and fill the background with "BFD483" - light green


Step 2.
Open the file "old-hazard-stripes-texture.jpg" with GIMP, press CTRL+A to select it all and press CTRL+C to copy it. Now go back the the Polly wallpaper file and press CTRL+V to paste it. Click the new layer button in order for the stripes layer to become active. Now set the layer mode to "Overlay" and Opacity to "70%". You will now have a cool effect like this:


Step 3.
Create two new layers. Fill the bottom one with solid white and the top one with solid black. Now make sure you've selected the bottom one and click Filters -> Render -> Clouds -> Difference Clouds. There check "Randomize" and click OK. Set this layer mode to "Overlay" and Opacity to "65%". Now select the top one and repeat the clouds thing-y, just this time check "Turbulent" also. Click ok and set the layer mode to "Overlay" again and Opacity to "75%". Now if you've done everything correctly the image should be similar to this one:

Step 4.
Now unzip the "PWR.tar.gz" file and open the file "Clouds.png" with GIMP, press CTRL+A to select it all and press CTRL+C to copy it. Now go back the the Polly wallpaper file and press CTRL+V to paste it. Click the new layer button in order for the stripes layer to become active. Now click Layer -> Scale layer and scale it to 2560x1600. Then click Filters -> Blur -> Gaussian Blur and apply 3px gaussian blur. Next up click Colours -> Desaturate -> there choose "Luminosity" and click OK. Now do Colours -> Invert. Set the layer mode to "Overlay" and Opacity to "40.0%". Now you should have a nicer looking image:

Step 5.
Now it's time to add the two finishing layers to the background of the wallpaper ... for now. Create two new layer with transparent background. Now select the bottom one and then choose the Paintbrush tool and grab some cool bubble brush (I used "BOKEH BRUSH"). Make sure your foreground color is white and start painting bubbles, just don't paint a lot of them (crazy man talking, I know :D). After you've painted them click on Filters -> Blur -> Gaussian Blur and apply 12.5px gaussian blur. You should have bubbles that look more or less like these ones:
Now change your foreground color to black and select the top layer. Grab a clouds brushes (I used Cartoon_Clouds_by_Yun_Zhen.abr) and paint a few big clouds. After you've painted them click on Filters -> Blur -> Gaussian Blur and apply 0.5px gaussian blur. You should have a lovely looking clouds like that:
Now set both layer mode to "Overlay", and set the Bubbles layer Opacity to "27%" and leave clouds layer Opacity to "100%". Now the wallpaper should look just like that:

Step 7.
This step is a walk in the park compared to the previous one. Open the "Parrot.png" from the "PWR.tar.gz" and press CTRL+A to select it all and press CTRL+C to copy it. Now go back the the Polly wallpaper file and press CTRL+V to paste it. Click the new layer button in order for the stripes layer to become active. Now duplicate that layer and move the copy bellow the original. Now make sure it is the copy you've selected and click Filters -> Blur -> Gaussian Blur and apply 7.5px gaussian blur. The wallpaper should now look suspiciously Polly-ish :D

Step 8.
That step could be a pain in the behind, but not to worry, I am sure you'll get it right. Anyway, grab the Path tool and make two paths that look just like the one shown in the picture:
Create a new layer and go to the "Paths" dialog in "Layers, Channels and Paths" window. Make sure your foreground is solid black. Now from the "Paths" dialog select your brush to be "Circle 13". Right click on the bottom path and click "Stroke Path", click OK with the default settings (e.g. Stroke Path to be 6.0px). Now go back to the "Layers" dialog and make sure it is the path with the stroke you've selected and click Filters -> Blur -> Gaussian Blur and apply 5.0px gaussian blur. Set the layer mode to "Overlay" and Opacity to "50%"
Repeat the same procedure for the top path too (from creating new layer to layer mode and opacity).
Now you should have two strokes on the image:


Step 9.
This step ain't gonna be much easier either, but you'll manage. So, again go to the "Paths" dialog and duplicate both paths. Now merge the duplicates. You should now have three paths:
Now right click of the Path created by merging and click "Path to selection". Go back the the good old layers dialog and create a new layer below the two strokes ones. Than select the Bucket Fill tool and select "F3FF7F' as your foreground colour. Now click Select -> Invert. Now bucketfill the new selection:
The last you need to do in this step is set the layer mode to "Overlay" and the Opacity to "30%" which will produce the following effect:


Step 10.
Almost there folks, just two more steps to go. So here comes the first one. Create two new layer. One between the two strokes layers and one above them. Select the first one. Now go to the "Paths" dialog and select the bottom path, right click and choose "Path to selection". Now choose black as your foreground color. Go back to the "Layers" dialog. Now choose the Bucket Fill tool and bucketfill the selection. Now press CTRL+A and than click Filters -> Blur -> Gaussian Blur and apply 2.5px gaussian blur. You should have something like this:
Repeat the same procedure for the top path too, just this time use the second layer you created. After you've done it you should have an image that looks like this:
Now all you need to do is set the layer mode to both layer to "Overlay" and Opacity to "45%". That will give you an ever cooler looking image:


Step 11.
This is the last step - mega YAY! Here's what you have to do - go to the "Paths" dialog and right click on the path you created from merging the two other some time ago -> choose "Path to selection". Now go back to the "Layers" dialog and create a new layer above all others. Select "747E00" as your foreground color and choose the Bucket Fill tool. Now bucketfill the selection and than click Filters -> Blur -> Gaussian Blur and apply 2.5px gaussian blur. The wallpaper should look like this now:
Now all you have do to is set layer mode to "Overlay" and Opacity to "45%". That will complete the wallpaper:


And if you've made it this far - congrats, you are done! Now you can rejoice :D
For those of you who will ask about my .PNG and .XCF here they are:
2560x1600 .PNG from Picasa:
https://picasaweb.google.com/100530892038948253747/MyFirstAlbum#5664773173252690018
.XCF from UbuntuOne:
http://ubuntuone.com/4TEU3Ro5nJ1axsbiF1XbBs

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