I wrapped the raw pieces of the straps around my little guy's neck and used a Sharpie to mark where I wanted the Velcro to go. Make sure you line up the Velcro so that the pieces will overlap completely for the strongest closure.
I used this fabric fusion Velcro even though I wasn't going to iron it on since I was using plastic fabric. I like this stuff because it has a sticky back so it stays in place while you sew it on since it's all but impossible to pin on small pieces of Velcro.
There you have it. A crumb-catching pocket, some Velcro, and two ribbon ties. How simple is that? This really would have taken me ten minutes if I hadn't had to start and stop to wrangle my little guy. I had to forgive his fussiness though since he was such an accommodating, and cute, little model in the end.