Neat. Good use of light on the skull (brighter towards the front, the sides taper off and get dark, that's good). A little messy, but it's alright for the time. The legs and arms are pretty good. I recommend trying to create a little more shape when you make the back (the lighting would imply a straight up-down back, like a board or something lmao).

Good though, you have some potential. That Link skin especially looks nice.