Step 3: Step 3: Mark & Cut
This part is also crucial, you need to pick good spots where you want the LED's to go. If you place them to far apart from each other the light beam won't be strong enough to blind a camera, and if you place them to close they will only hide your face from a certain angle... So you need to think this out and position them well.
Using a marker i first chose the spots .(pic. 1)
I cut a few holes with a pair of small scissors in the front (middle of the hat) and a few on the sides to get a wide beam . (pic. 2)