Way to go, on your first attempts here, Baobeir.
Say, I feel that these lines are a little bit to faint. Would you please work with a darker pencil of graphite, like a 2B, for example, while loosening up with 30 minutes of 30 second scribble poses? (60 of 'em)
The reason why you should do this is because, it could make the perception of the edges more clearer, and less ambiguous.
My hat's off to you, and I hope you've found this extremely and positively concrete and beneficial.