Twill sewing tape helps to pull in the gaps. I found some inexpensively on ebay. It helps to have another person help you when you aren't used to manipulating the tape and box at the same time. I'm not as neat as Robbie.
I don't wrap my guitars as much anymore. I think it's due to using the bending machine, rather than hand bending, because I can leave the binding in the machine overnight. I take it out of the machine, clamp the bent binding in 1 side of a mold, and leave it in the mold until I'm ready to use it, so there's minimal spring back.
If you wrap your box with twill tape, make sure you bind your top first, because the twill will leave Mark's along the edge of the spruce, if you don't.
PicsArt_11-15-05.09.24.jpg
You do not have the required permissions to view the files attached to this post.