Hoping someone's around and able?

I'm looking for a custom overlay for

She'll by hydrus soon, but I'm not sure how stringent the rules are about overlays? (ie, if we're allowed humanoid overlays on pets) I'm also not 100% certain that I want it to be humanoid, either, but I'm finding it difficult to picture different overlays. Input into the process is definitely welcome~ ♥

Reference

(reference done by Senshi)

Thanks!