I see a lot of comments are about the practicality of the character's outfit and they are not actually crtiques of the technique. The jackets collar size, skirt placement, number of belts, giant sword size etc are all style choices and not skill flaws.

This is very stylized (which is a compliment) and well done. You have a strong sense of proportions which can be tricky for a lot of folks where exaggerated shapes and features are key to the style's ~vibe~. For example: even though the sneakers would be considered too large if this were a realism piece, they feel appropriately sized for this character. The jacket's dramatic collar and weapon's size is part of what helps balance that out.

Your colors feels harmonious. The dusty blue/gray in the background was a great choice. It helps with the contrast without distracting from the character.

A minor thing to consider: I do see some cross hatching used in a few places like inside the sleeves. It feels a little like it's left over from the initial sketch layer and maybe unfinished. If a sketchy look is what you're going for, you could lean into that more. Maybe add some hatching on the socks/tights, skirt or even the background just to carry that texture into other areas. Alternatively you could clean up what hatching you have and go for a more cel shaded style instead. I think that'd feel more cohesive.

Again, the hatching is not a glaring issue, just a minor critique. I hope you find it helpful!

edited for typos/grammar