Yo seeing lots of work, not sure what you are studying or implementing in your studies - which is not as much a critique but rather a pointer to remember that sometimes a lot of work doesnโt mean a lot of gains if you don't have clear goals (happens to me a lot :P) but I am sure you ate having fun with these studies - the birds in particular are great
As for your figure drawing, be wary of the tilt of the pelvis, it is usually higher where the weight bearing leg is. For example, even the fatter lady has this, but it is harder to see. Try tracing a line from one illiac crest to the other (illiac crest being the pelvic bony region where the fat from the abdomen ends and folds over the skinny area where the thigh begins)
Then attempt the same in your drawing and compare
Cheers!