I've got a patrol tunic that I will be wearing as a piper. It has a stand-up collar and I purchased some metal pips shaped like a Scottish weed. But, I'm confused as to how to attach them to the collar. Each pip has two posts at opposite ends on the backside that have eyelets to insert a pin through. I've never seen such before. What I don't get is how the pips are run through the collar. Am I supposed to puncture the collar in four places with holes large enough to fit the posts with eyelets through? So, I need an awl? This seems rather distructive with no mistakes allowed (unlike a badge that only makes a pin-hole). Advice? (I'm guessing, "measure twice; cut once", will come.)