deniro bugabog

I can't comment on the medium, but I like the composition and use of color. A strong, solid drawing in proper perspective. The only thing I'd pick on is the placement of the ear. It appears to be too close to the front plane of the forehead.

If you square off the head to make it a cube, then you can find the center of each plane by crossing the diagonals. The front edge of the ear should align with the diagonal that crosses from the lower front to the upper back of the side plane - putting it even with or farther back than the back of the jaw.

In any case, fine work.