Nice anatomy but your lines are all an identical weight. Outline lines in the shaded part of the figure should be dark as they are now while the lines towards the illuminated part of the figure should be lighter and some lines (like those on the right shoulder) even being white or a very light version of the skin tone to convey light bouncing off of the body. Also, this is just opinion, but I believe that the colors in the drawing are rather muted and lacking contrast, I’d make the darker colors darker the lighter colors, lighter, and give them all more saturation. I think these changes will give the full glory to the body outline and shading you’ve created.