I used that product for testing with success, though as others have mentioned it is not ideal. There is an accessory kit with squeegee/cutter/spray that you should get if you go this route and you will need to work very hard to make sure the end result is clean and bubble/blemish free. I think it’s fine for prototyping or if you’re not too picky but I would also suggest getting the mirrored glass.

I used that product for testing with success, though as others have mentioned it is not ideal. There is an accessory kit with squeegee/cutter/spray that you should get if you go this route and you will need to work very hard to make sure the end result is clean and bubble/blemish free. I think it’s fine for prototyping or if you’re not too picky but I would also suggest getting the mirrored glass.