It would be beneficial to work on adding more contrast to your colored works. As it stands, shadows are flat and lend the paintings themselves little depth, and it can even become difficult to tell exactly where the light source(s) is coming from. More striking contrast would make your images more dynamic by far.
That said you appear to have a fair grasp of human anatomy thus far, which means you must be practicing that a lot. Just make sure you practice other things as well; a common theme I have always seen around here is a lack of emphasis on anything except the human form and unrealistic swords.
Hope to see more of your work soon.