if a trackpad is what i think it is (like on the front of my laptop?) you are not skilled, you are a psychotic masochist.
portrait is great, i think the hair may look a little flat (compared to face)... needs some sort of depth added.
the animation :
1. The top pixel of head should not disappear and appear like that i dont think
2. If the one pixel of hair moves (nice touch), why not make the whole fringe bounce slightly?)
3. Ditto. Also, watch the arm upswing timing, you will find this is almost one of the first things to happen when jumping, it is part of the moving of energy causing your body to lift.