sort of lens that gets placed on top. there are a couple different ways to make this lens. you can make a separate lens that gets attached to the led later, or you can hot glue right onto the led its board.
i will show you how to make a separate lens that gets attached to the led. you can hot glue right over the led if you like but if i need to remove it later i find it easier to if it's made separately, then attached.
plug in your hot glue. put some parchment paper on top of the led. when your glue gun is hot, cover the whole led 