I always wonder how artists such as you can create such detailed work with those tick, bold brushtrokes and even with the dark b/g and overall tones, you still managed to separate him and have a wide enough range of tones to define his features
Just let me say, I very much like your portraits. You sense of value and keen seeing skills are impressive.
I decided on this piece because the mark making appealed to me, its worked thickly and with energy. The blocks of color work strongly to it's advantage and the texture of the drier strokes is very nice. The only drawback is I feel you're limiting yourself to much to what you see. Here are a couple of my favorite modern figure painters (that you may already know): [link][link][link] Particularly, Savillie. Modifying the size of your stroke to distinguish point of focus, and when you use color, to push what you see, exaggerate more and become unbound.
All of the really positive things I'm seeing in this piece are what I think I'd want to see pushed a little more in your other works. I feel that Anna Roosevelt, this one, and the tunnel are some of your stronger and more distinguished works because they carry more of yourself, a little more play. You could do anything you wanted with the chops you've demonstrated in those pieces, and I think pushing for experimentation (such as the collage element in your untitled piece) is all I would recommend.