Thank you Dave!
You are right. I need to keep at the old anatomy an also at every other kind of studies (perspective shading etc...)
I know I'm at the very beginning and the way toward improvement is so long!
But I think I will be able to persevere.
(about the cute mice i'll see what I can do...)
Here is the first life drawing lesson we had at school. the male model had the clothes on because we had to focus on the folds.