Does the custom-overlay for pets follow the same rules as CW?

As in, I want to make one for

Do I need to make all four changes? I kinda wanted to make the same design but melting, so I just want to know if that's allowed ><'

according to the custom overlay page:

Well, I guess I'll have to think of some other changes to add :p Thanks <3

you could maybe keep the green eyes and stem from the cherry blob, add some specific details (idk, freckles?)... not sure, it's definitely a tricky one.

This thing is supposed to be a necklace, so using the cherry parts is a good idea :3 I was thinking of changing the eye color and making it have just one eye for third and fourth changes ><

And I'll also change the shape because as I said, it's still a blob so I want it to be melty x3