Everything here is well drawn, but i always a believe there is still a room of improvement at some places, such as.
Like a member(too lazy to back to page 1 XD) point out there is an error in the perspective. You can work it by try take a photograph of you from different angle as your reference, that will help you a lot in learning perspective.
Well not only the perspective that need works too, i seen some eye placement that is too far or near.
Well keep up a good work, everything here pleasing to my eyes ^^