Good lines

Personally I recommend a bit more variety in your tones, like in the face and hair. I heard it’s good to have a variety, but then again I’m also a beginner so you can take with a grain of salt. I really like to line work though.

Nice drawing! I may be wrong, but I think all values on the left side of his face should be darker than any value on the right. In your rendering all values got a bit mixed.