It's by no means a bad picture, but (if you can alter it - was it scanned in?) correct a couple of things:

1) Her left hand has got a line going through the sleeve - erase that (again, of you can) because it looks confusing. You don't know whether there's a sleeve partially covering the hand or not.

2) Her fingernails don't look right. Maybe you shouldn't include them at all, instead just have the fingers.

Other than that it's not bad. And that's my honest opinion.