Figured I'd share this since I don't have any grand art projects to share as of late.
Here's my take on Slippy and Amanda, and how I was brainstorming how to depict her. It's worth noting that Amanda is the only non-mammalian female character (save for Croakella, but does she really count?) so I was wondering how to keep her appealing and stay true to her amphibious nature, instead of trying to make her attractive like we would a mammal, and without species-swapping her entirely. This isn't set in stone.

Ah, and there's my fan character, Gilda. I wanted to see how they'd look standing next to each other (don't mind the fact that their placement looks off- I drew this spontaneously.) ^^;;

Amanda doesn't know this yet, but she's got a rival in Gilda. Good luck, Slippy!

Anyway, that's it. Enjoy!

Gilda Dengar belongs to me
Amanda and Slippy Toad belongs to Nintendo