This is my first tutorial so bare with me.
Made in PSP8 but i'm sure it can be easlily translated into other programs.

This: to:

I started out with this base I had on my computer

1. Duplicate the base once and set it to softlight opacity 32.

2.Now make a new raster layer and fill it with #8694C8. Set it to Overlay. 100%

3. New raster layer. Fill it with #272E47 and set it to exclusion. 78% opacity

4.New raster layer. I used a gradient by crumblingwalls then set it to softlight 88% opacity.
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5. Then I added a texture (by meleada) then set it to soft light 100% opacity
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teh_indy and set it to screen. 100% occupacy I just played around with the position of the layer.
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I just added some brushes and text and voila here's the finished icon:

Hope it was helpful! it was my first tutorial :)