Hello,
I think they are okay. If you dont provide the reference that you used next to them we cannot tell how/what you were trying to do. Get a likeness, practice contour, practice modeling form.
They look like they were quick studies, maybe 10-15 minutes.
Your line work is not consistent. It looks like you were learning the program and figuring out how to use three different brushes.
Try not to ask for generalized critique, and ask for more specific help regarding topics you may have struggled with that way the community can help you more in depth with what you are wanting to learn to move forward.
