I love Kvothe ! I am not an anatomy expert but your legs seems fine to me. For the lighting I think you didn't darken enough. Also a good rule is to shade with another color, preferably a cold one if your light is warm ( and vice versa). Also be clear about were the light is coming from. Here I would guess top left and on the same plane as him, so no fire hair on the right. I hope it helps.
Thank you so much definitely great tips!!

