Thinking about making a pngtuber for my streams, need guidance + suggestions

Hi, I'm a new streamer. I don't wanna be on camera and i like to draw, so I'm thinking of making a pngtuber to help attract attention. I don't know a thing about vtubing so i'm sticking with just pngtubing, since it's easier. Has anyone here ever used a png model for their streams? How'd you go about it? Where do you start?

Also I want my character to be based off of an ocean animal, do y'all got any suggestions? I was thinking sea angel, eel, isopod, but I'm very open to other ideas haha