Hands, besides human noses, have got to be the hardest thing to draw XD They can be posed in so many positions, and each finger can be positioned differently, and it's just...trying to get the angle to look right and trying to get the proportions and all that stuff XD Sometimes I resort to taking photos of my own hands in the position that I need to draw it in. Other times, I'll use my wooden posable hand (they're made like those wooden manaquins for drawing the human form). Mine's a right hand, since I'm right-handed and I can't look at my hand and draw with it at the sametime, it's helped a bit, but I've found just drawing from pictures helps a lot too :)