This looks really great! The only thing that I could suggest is that the right calf seems disproportionately small.
You did one of the photos of Betsy. Overall it is very good. Proportions are good. You need to do a little work on hands and feet. I am going to recommend a pencil that will give you a really dark blank. Check your local art supply store or Amazon for a Prismacolor Ebony. It will give you a jet black. I don't know what pencil you normally use but I would recommend a 4B which will give you an all-around pencil. Again, practice makes better. So get practicing.
Thanks. I'm sort of new at this and when I did draw in the past it was usually with a #2 (HB I think?) pencil,
A Hb or a 2b would be good for laying in the figure.