Helpful tags:

black sclera, pokemon \(creature\) -- the usual

yellow fluff -- for regular Mega Lopunny

pink fluff -- for shiny Mega Lopunny ✨

ripped leggings -- you know what for

brown body -- optional. Sometimes, when generating shiny Mega Lopunny, its entire body can come out pink. This tag prevents that

Civitai: https://civitai.com/models/523851/mega-lopunny-pokemon-ponyillustrious