Being a big fan of the series, those Alice Madness Returns outfit concepts really caught my eye. Were they made just for fun and as a tribute?
Other than that, wow!! What progress! Being somebody who has a lot to learn still I don't have much to add, except that I think there is a bit of lack of body and facial variety on the characters sides. When they aren't (half-) creatures they are all kind of slender and evenly shaped with about the same chest-hip ratio. The women mostly stay in the beauty standard of many fantasy pictures - high cheekbones, arched eyebrows and slightly fuller lips look.
Push yourself to go for more "unperfect", but interesting structures? You have great variety with your creature and male design and there are many ways of still conveying beauty! Although I think this is something every artist struggles with because we tend to kinda fall back into something that is our inner default body-facial type.