The thing that brings up the color count way high are the gradient you use. This is considered not pixel art, or at least not strict pixel art - according to the rules we like to follow here.
Other than that, the piece is good, I like the very colorful palette and the contrast you put in details. A very nice work overall !
Thanks for your input! Yeah, the program I use ends up doubling, even quadrupling on colours when I export it, it's something I've been trying to fix but haven't gotten around to it. I'll be sure to post more limited palette exercises to make up for this hopefully. :')
This is beautiful!