i think you're doing pretty well so far. Two things I noticed though. His left leg (the one on the right side of the study :P ) is a bit too slim. Especially the lower leg. I think you could make it a bit more muscular. And the second thing is the weight of the woman. I think her butt could be a bit bigger
and really observe the photo for the weight. The guy is holding practically her whole weight, and on your study she's floating a bit. That's all i'd try to work on for now if I were you. Other than that I think you're doing fine.
Keep pushing, keep observing.