I'm amazed how many different ideas You have. Really nice work, and handling of colors and posing. Watch for the balance though. The Akako girl and Cpt Raven look off-balance to me, but I'm no expert in that. I suggest getting reference sometimes for some of those poses.
One more suggestion for You would be to try painting a more delicate / feminine female characters as well and not only strong heroines.
Also, You could try varying their body types more.
All that being said, I love Your works so far and will definitely come back to see more. Keep it up and good luck!
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