okay the anatomy is AMAZING imo. i love all the curved lines and the proportion you drew here. i think you should just choose an other way to shade cause sometimes it looks like hair not like you have shaded, but beside that i love it.

@Carlos Jiménez Cool! I really like your figure drawings! Although, if you allow me some critique, I don't know, I think I'd tone down the hatching lines a little bit on some of them. When the hatching is subtle, as in the last drawing, I think it's nice, but when it gets heavier, as in the second one (Chanon from the back), I think it looks a bit like hair and starts to feel a little bit odd - at last to my eye. If you're really into line hatching, you could maybe work it out in a different way - perhaps with an even finer line and working with several layers of crossing strokes? Or maybe mix up some hatch lines with flatter areas of shadow. It's just some thoughts - I'm no hatching expert. :) But I suppose some experimentation could do good. Hope this helps!