I don't have any velcro, so I just left it off and will add it once I get some. Start to finish, the project took around 45 min. I used fleece, which saved time on the spikes, and primarily sewed it with my serger. Fun and easy project for any kid who lives dinosaurs or dragons.
I was happy to find a use for this fleece as it is leftovers from Zboy's Halloween costume (he was a turtle)