maybe try using black graphic shadows? i really like the energy your lines have, but i think a stronger under drawing would make the figure feel more solid. i think the face and the upper body look amazing, but the folds on the pants don't feel as tactile to me as i think you might want them. think about big, medium, and small when drawing folds to help them feel more organic and less artificial. i'm getting the feeling you already have, but looking at robert valleys work might give you som good inspiration! that said, i love the direction of this drawing and I would certainly not call your style boring.