The VG Resource

Hey fellow resourcers, I've made this custom/edited sprite sheet of the Elite Trio (from the Mario and Luigi Series) in an NES-Style. When I uploaded, it was rejected, and I understand why, so I would like some advice of what I could do to improve my sprite sheet.

What did the PM a staff member sent say?

First off, these are simple edits. If you want these to accepted, try making them in the style but closer to how they look in the games. I'm sorry I couldn't be much help outside of that.