Great stuff here, man! Sailor Jupiter is indeed the best, after all. I really like your use of color. I'm not the best at it myself but the highlights and shadows are all done pretty well.
I'd like it if the background was a bit more vibrant, maybe if it had more lightning bolts or a less muted color? I don't know if it was intentional, if it was then that's fine due to artistic visions and all that. But it's a very nice touch having the speech bubble be white and going against the blueish BG.
