First thing I did was to make the hole just a tiny bit bigger so that the tie would easily go through.
Double the tie over and put the ends through the holes toward the horse
Bring the ends around from either side to the front
Line them up, and put them through the loop
Pull the loop tight from the back and then pull the tails tight down through the loop
Then, you're good to go. It looks neat and clean, holds well, and is easy to undo whenever you need to.