I don't really like SC3 created characters based on non-adult human models because they're often very different from what they're supposed to be, while the fighting style is practically never the same when the character had a fighting style in the source material.
That said, I liked your Yuyuko and Remilia depictions. Given, Yuyuko's fighting style looks a bit off than what she shows in fighting games, and your tentative of emulating Remi's wings didn't end up very well, but overall they look nice.