It is looking pretty sweet!
Anatomny abstraction is pretty good! Maybe some more time on the proportions or perspective and finding those landmarks to help you with the the rhythm or perspective. But it is good enough here to move on and decide other fun parts of the painting you can keep changing as you go.
Just a thought on arranging your value groupings and your picture elements overlapping not make tangents bumping up against each other to lose your depth.
Not everything needs black or white on it cause it can blow it out. Use the values to separate the elements of the picture more by limiting the amount of values in the elements.
Its just up to you to compose nice shadow shapes with the pants wrinkles and other abstract parts of the picture. Creating interest and focus where you want it.