So I've always heard that the foil from cigarette packs makes for good heat shielding material. However, I don't smoke so I took a piece of fiberglass screen and pressed it onto a piece of foil tape and I think the result is pretty good!!
(https://i.imgur.com/NWmSZs2.jpeg)
(https://i.imgur.com/wWmG6GB.jpeg)
(https://i.imgur.com/4mSyNHe.jpeg)
Looks convincing to me.
I like it.
...I think it looks more realistic than the cigarette foil