In the event you decide to try wrapping letters of your own -- here are a few things I found helpful:
-begin with the simplest letter as you attempt
to get the hang of it
-put the glue on a bit wide, and wrap three strands around at once (this is a huge time saver!)
-the string going around the back does not need to be perfectly straight and is a good place to begin/end extra strings of twine. But do watch the front and make sure it is straight all the way across!