You really can't think of anything else?
For example:
- Choice of colours
- Choice of brush size
- Choice of glow/ shadow colours
- More workspace
- Doodles that DON'T diappear when you change brush
- Maybe chuck in some backgrounds to draw on
- Or some pictures to colour in?!
Don't stop adding to it until it's better than photoshop :P
Nice work though but I scored you low cos of not noticing the stuff you missed out (I mean the obvious stuff like colour choices etc, not necessarily the stuff I suggested)
Like to see version 2 when it happens