Hmm... Since you have a light source right in front of the character I'd say you need very dark shadows, and highlights.
Looks like you had trouble here with the hands... figures; those trouble me as well.
Little trick I do... the palm of the hand is a rectangle, the fingers, aside from the thumb, I "carve out" of another rectangle or half-moon shape.
Lastly... I think some line variations is needed here: Thick Lines for the overall outline, medium lines for the big details, and thin lines for the little details such as the embroideries.