Are you set on keeping the proportions very true to the original? Because often pixel art have a bit chubby/unrealistic proportions to cheat in more details (for example for the face)
I'm not set to it, in fact my later target is to paint in a more 16Bit SNES (Secret of Mana,CrossCode) style.
But since I have huge problems with it I use normal proportions and bigger images to have some "easy" pictures, which cheer me up and give me some kind of accomplishment/success
Here is my copied Secret of Mana version (palette won't be finished):
Looks good to me, boss. Simplistic, recognizable as usagi, color scheme recognizable as the same kinda oldschool pastel...
I'd poke at the hair some to smooth it out but the rest is fine I'd say
Yeah, the hair is a littlebit chaotic.
Thank you