In some of your paintings have very good concepts, but I think they need more development in the graphic sense, more technical, enhance colors and practice more the Cross-hatching. I think this way (take the concept of the hand and in the same level) your work would have more impact than they already have, (THINK IN THIS!).
I say this because here in DA I see many jobs with excellent technique, but they are so busy that they forget the most important thing in the image: The concept, as the melody is so essential in a song, or the screenplay in a film. Well then in your work sometimes happens just the opposite.
But maybe I was wrong and what you do is something merely deliberate in every way?