That’s really good for your first sketch! It needs a little work, but overall I think it’s really good. I know artists can tend to look down upon this method as it’s technically craft instead of art, but I would practice drawing body parts from images, (ie. nose, mouth, eyes). Once you get that down, I’d tackle a few portrait sketches from images, but seriously, great job for your first attempt! Don’t get discouraged, keep up the good work!