| Designing
a planet explosion style wallpaper |
Start by applying a nice gradient
to the background layer. Create a circle using elliptical shape
tool.
'
Reduce the fill value to 0%.

Double click the layer to open
layer style window. Apply settings as shown.


Ctrl+Click the layer thumbnail
to get the selection. From edit menu select "define brush
preset". Named it "bubble".

Hide the bubble layer. Create a
new layer. Select brush tool.
Press F5 to open brush settings.
Apply settings as shown.

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