I need help overlaying an image. I know how to overlay the image for the base image, but there are other images I'd love to cover as well.

It's for a pet site (PetRPG.com).

Here is the coding for overlaying over the pet's base image;

I just can't figure out how to overlay over the pet (Charlotte)'s minipet.

The minipet is this thing;

Any help is appreciated!! I assume it's just editing the original coding for the base image but I can't figure out what the "#pet_image" version is for a minipet, I've tried "#minipet_image" and such but no luck haha.