You're not good yet.
Just do more of what you're doing, only this time, keep all your animations to yourself. At least until your animations become much less wobbly/choppy, and when you finally get your physics passable. You really won't get much helpful comments or criticisms when you just keep posting your new animations.
Practice a lot first and maybe after a few months or so you would have already gotten a good grip of the program and maybe you'll be ready to ask others for help on how to improve yourself.