Mr. Y Sprites Sometimes

[Iocus]

Not too shabby.

However, I think your characters seem a bit unbalanced, their heads don't seem to be properly aligned to their bodies (try using the old "flip horizontally" trick to check if the alignment is correct or not), I suggest moving everybody's heads one pixel forward.

The princesses could use some more work, actually. The contrast is so low on their faces, they are almost unintelligible. The blue on the eyes is so light that it blends with her face, just like their mouths. Their shoulders also look uncomfortably stiff, I think you should move them around as well. Their heads also look kind of blocky, especially Daisy's. Here's an edit (mostly on Peach) to help you out.