Good, i like the way the head is getting out of focus and disapears in the paper. There is small thing that could have made it perfect, its his feed his toes. Especially since you putted the focus on the front with the contrast. Try focus on feed for a while. They're one of the most interesting parts to draw.
How long did it take you, i used to draw like that too and i did it a few years. We did 5 to 7 minute sessions per pose and i got similar results, started with drawings and later water paintings (still in 7 min lol ). (but not shown on deviantart, i want to separate that)