Dang do I love your art. Especially the colors and clothing.
If you're looking for ways to get better with anatomy, I've found that very roughly and quickly tracing other people's art is pretty good for practice, just keep it for practice only haha. I'm personally terrible at proportions, so I find that it helps having a temporary lined or checkered background to measure things against. There's a lot of anatomy tutorials online, and I mean A LOT. It's better to find one that suits you than to have other people recommend ones. Sometimes, the ones I've been recommended just don't work for me, because some people like to start from very basic geometric shapes, others prefer to simply use lines, and then there are those that like to start out a little more detailed.