We’re currently renovating a bedroom for our daughter right under the roof, and it turns out that because of the slanted attic windows, the room heats up like a sauna during the day. We can’t install an air conditioner there yet, so we decided to tint the windows ourselves with a special film to lower the temperature a bit. Is it realistic to do this on our own without any experience, without damaging the material? And what kind of film should we choose so the room doesn’t get too dark for studying?