Centre the ribbon with the first 'E' of CERBERUS opposite the tag at the back of the cap. Tie an overhand knot directly under the left hand seam of the cap holding the ribbon firmly in position with the thumb until the bow is formed.
Take the lower tail and pass it under and then over this bight such that the tails end up next to each other.
A bight is now formed in the right hand tail and should be tucked behind the first bight just before the centre of the bow.
Carefully tighten the knot, being careful to ensure that the bows are of the same length and are not too long.
The tails can now be cut to the same length as the bows with the ends being trimmed at an angle.