First of all.... ASDFGHKJ I lost tha game D: Secondly, I like that hand. If you hadn't of said about the index finger's tip looking too short I wouldn't have noticed. I see why the pinky scares you, but it looks fine in the position it's in. The bit of skin between my thumb and index finger, when I put it in that position, it has a big fat wrinkle in it XD In fact my hand looks completely different o-o Probably because i draw with my left hand so it's been sorta... bent out of shape. My ring finger curves twoards my middle finger and my middle finger has a bump on its side, close to the nail, but I cans see that bump in your drawing >:O My hand looks a LOT less hand-like when I put it in this position... it's funny to look ay. I think I found what's going to amuse me all day o-o
Anyway, enough of that XD I can't draw hands all too well, this is really good ^-^ The only flaw I can pick out is one you have mentioned about the index finger's tip being a bit too short. Maybe, also the bit of skin between your index finger and thumb, it looks kinda odd being so straight... Appart from that, it's practically perfect in my eyes ^-^