Hello, \n\nI've done searches as suggested but can't seem to find an answer to my question. I would like to line the horizontal corner where the ceiling meets the wall (90 degrees) with panels as the ones in the pics on a 45 degree angle to eliminate the 90 degree corner. \n\n1 - Wondering if this is wise?\n\n2 - If so, should I glue aluminum foil on the back, front or leave the panel with no foil. It is not a reflection point obviously so I am thinking foil on the back because there will be a gap?\n\nCheck out the poor quality pics I've linked to. It's a dark room so it's hard to get some light in there. The files are also too large to attach here. \n\nhttps:\/\/drive.google.com\/file\/d\/1vgQmHGwM4M4mNtalticbIDzq1hSzVqKl\/view?usp=sharing - panels for black covering. \n\nhttps:\/\/drive.google.com\/file\/d\/1n63IkiI3bkeAILxeRD4PKJ3hL8Yq38lw\/view?usp=sharing - front view\n\nhttps:\/\/drive.google.com\/file\/d\/1vgQmHGwM4M4mNtalticbIDzq1hSzVqKl\/view?usp=sharing - corner of ceiling where I am thinking of putting some panels.