I really like the overall design of the character - especially in contrast to the other character in the first picture. It's got a lot of personality! I think maybe the problem that stood out most to me with the graphic shapes for the lighting is on the left arm (character perspective) where it seems just a little too sharp and doesn't follow the shape of the arm, It kind of leaves it feeling a little flat, or that it might be a clothing design or something - if that makes sense? The other lighting areas seem good to me tho I'm definitely not an expert in this - but yeah, overall nice job!