Magdalena - The woman with the wooden head looks natural - her body that is

.
But I wonder where you found the references for the two other drawings. The man's drawing is well executed
per se, but he is extremely muscular, almost a caricature.
But the woman doesn't look real, suggests to me an inflatable doll

. In particular the transition between neck and chest lacks a clear structure:
Figure drawing is a complete discipline in itself, it needs more than an introductory class. I can recommend a series of
workshops in the Figure forum. They are no longer active but contain a lot of valuable information.
