no,i mean for the shadows
negative lights make things that are lighted to be darker
in this fast example i made a cube on a plane, 1 directional light and two spot lights with negative values for...

Did you know that you can use negative lights?

What the hell is that for? when you have two lights striking on the same surface the effect is one light wich haves an intensity of the sum of both. ...

Hey, I'm learning all alone too. Its dificult some times but remember that if u want u can.
About the modeling, it is ok, the more difficult thing is to make it stay ok when you pose the model... ...

i remember something about a wing rigging and animation tutorial:

it was around www.learning-maya.com/index.php

I got some suggestions:

- doesn't the thumb looks a bit flat?

-maybe u can make that bone in the wrist to bulge, I dont know its name in english, but if your right hand is facing downwards you...

She's really nice, well done with the cloth!