>>1885585You have a thing you do a lot, especially in the 3/4 view, where the curve of the back is oddly high, making it seem like all of your girls have a tiny upper body and a large dumpy lower body. Elongating the upper body a bit and adjusting the lower body accordingly to give her a more defined waist can give a better overall body shape.
The back of the neck also seems to curve out in a way that doesn't attach to the head correctly. You don't have this specific problem in your other art, but it might be useful to get an idea of how the neck area looks at different angles and positions. There's probably a lot of professional artists that need to do that too.
Also the bellybutton looks like she was disemboweled or something. You don't seem to have that problem in any of your other art, so there isn't much to say on that.
Here's a quick edit. It's definitely not perfect, but it should be enough to compare and give an idea of what I mean.
Other than that, the arms are a bit odd. It seems to be partially weird proportions and partially awkward foreshortening. I can't really illustrate it properly with just editing, so you're sort of on your own for that one.