Planning my Halloween costume

Uhh idk what category to put this in lol.

I'm thinking about dressing up as the pumpkin slime of my persona. I found a really cool pumpkin head mask pattern online and I wanna use EVA foam for it or something. Not sure what to cover it with though? Idk if i wanna paint it, use like some kind of plush fabric or some kind of spandex fabric. Very important decisions hmm.

Also wondering if I should get one of those hard hat adjuster things so it fits my head better and wouldn't shift around as much. I also need to figure out what I want the outfit to look like.

I have a lot more to think about but I just wanted to get my thoughts out here now :3