This is my "Transcendt " pendrive painted with my fingers in my 3.7" Motorola Defy.

This is one of my pendrives.

I started to paint it meanwhile I was taking a rest after playing padel, sat on my sofa.

It's a bit hard to make lines/edges as perfect as they should or at least as I wish to but SketchBook Xpress doesn't offer any kind of help for this question, so the only way is correct and correct and your practice and hability...

The Xpress version has only 3 layers to paint, but for me it's enough. If you can manage them well  you can paint all what you want.

See you soon.