Thank you!  Control your values, as they say. 

I kind of love the use of grey as a highlight here!

Very nice portrait! I like the cool light on the side of the head, and how you hinted at the top edge of the glasses with a subtle reflection.

Sweet portrait. It's very charming.

Aww, this is really good! The brightness of the eyes is perfect, wonderful job!

Great portrait, I love the emphasis on the eyes!

it's him! mischievous captain gerbear!
that's a great portrait

Thank you! I've done a number of portraits from drawings before, but doing this one from a photograph was a little different. 

Cool avatar, and great first (self) portrait!