Peach's face is looking weird, my guess is that's mostly from the 3 dots making her nose. Her eyes could also have 1 extra pixel of height and the middle of the pupil could use one extra pixel in length, make it slightly "rounder"
Yeah, only 1 extra pixel in height looked off. Added a second and I think it looks slightly better. Tried the extra width on the pupil, but that went much worse than I expected.