Easy HUD Idea

i made a hologram using an ipad and a peice of glass, i thought i could do something similar to make a HUD. i grabbed a hat and put my phone on the under side of the cap and then got a piece of plastic and bent it at a 45 degree angle. it reflects the light right into your eyes but the plastic i used was really scratch and didn't work well. im thinking about making a mount to put a much better version on a helmet and getting a good picture to use or program something to use for laser tag.