Those look great! I myself have something to show, something I'd like critique on, please

its an almost-finished version of my earlier drawing. I cut in what was necessary to make it look better :p
http://img535.imageshack.us/img535/7382/shburdfvgre.pngI added to her dress, drew her right hand, improved the eyes, and added some depth to the hair. The end result will have her with both hands doing a magic incantation, with a gentle smile (still trying to make her look gentle XD). The incantation will have its own background too, in the end.
Any things I should fix before I move on to her other hand (I think the hand i drew is really wrong in particular...)? Also, some tips on drawing tiny pictures, please? My art looks way worse when I try to do it really small. This one time i showed a drawing on webchat, people said it sucked, and on that same day I drew
this which I think was a dramatic random leap in skill

and I got better onwards!
I would also really appreciate any general tips on drawing manga as well. I kinda lack common sense ^^;