just hop on ebay and search up stickers of whatever like
etnies stickers
microsoft stickers

no clue on any sites
I tried Ebay but I couldn't find any for an ESP MH-50. It's all strats and Les Pauls. I really like the George Lynch Kamikaze design but can't find an MH-50 template decal for it.
Guitars decals aren't really a big market. Actually, I've never heard anyone wanting a full-body decal before. If you want a full-body design like the Kamikaze, you're probably better off just painting it yourself.