Please don't pre-zoom your work, it makes it harder to make edits. The forums have a zoom feature, click to zoom in, and click while holding alt, shift, or ctrl/cmd to zoom out.
You can get livelier looking colours if you hue-shift the colours in each ramp instead of just making them darker/lighter.
Other than that, the sprite already looks nice, but consider using shadows to define the form more instead of relying solely on outlines.
Here's an edit that adds a little more hue-shifting and some shadows:
I couldn't tell how exactly her legs are positioned, so I just added some suggested folds. You could get a more dynamic pose by having one leg forward and one back (this can be communicating by having more shadow on the leg that's further back).
