I've been staying with my master for for the last couple of weeks, and got to play with his drawing pad.
I decided to try to make a eye as that should be simple and would let me get used drawing like this.
Well, here it is! After about.. One or two hours, I managed to draw this.

I learnt a lot. all of this was done on one layer, whereas my next drawing is has about 7 right now.
There is still a lot to learn, but it's fun!