im thinking it wouldnt be the trouble its worth. but thats just me. it would be able the same as using tin foil and thats not good to use. you would have to flatten it to where there are no crinkles and even then idk the reflective capabilitys of the inside of a can haha
crazy.... Aluminum foil would be the same thing basically, and that's not even close to one of the best things you can use , I would recommend Flat White paint over Foil or smashed cans...