I try my best with skelatons. On the Chibi's it's a simple skelaton, but it works. As for the non-chibi works, I have gone through several attempts to find a skelaton that works. The most recent one starts with the arms, and the one before that was just a regular skelaton. (Like circles where joints are and so on.)
I try my best at keeping the sizes right (I really do), like the head to shoulders, but I have a tendency to draw small because I don't trust myself with drawing big pictures excluding the chibi. So the result is a strange, incorrect sized hand to arm, head to body, and so on. Even when I do draw big though, it does turn out wrong either way. I guess It's just something I need to work on more or less. Hopoefully I'll get it over time though
I still need to find a way to draw eyes and eyebrows and the rest of the facial features, so I know that isn't as good as it could be. Same for the gender issue, I guess I just need to work on it a little more, although I'll keep the hip, and breast thing in mind because I never really could figure out how to fix it until you meantioned it.
Like you said, more practice I guess. It can get a little frustrating though when you can't draw something as good as you want it if you know what I mean. But thank you, I enjoyed reading that, and I will keep everything in mind on my next drawing.
Thank you very much, I appretiate it.