Playing with digital paint

I'm pretty new to the whole digital painting thing.  Well, to painting full stop.  Last time I tried to paint was with nasty cheap arse paints at school and kind of convinced myself was that I couldn't paint.  I'm prepared to give it another go, but -ggrrrrrrr- not got much patience.

UPDATE:
I've been reading a book on Yaoi and apparently the colour green is synonymous with homosexuality in Japan!  LOL.