Re: Fabric finish help: spot that didn't stick
I've done several fabric finishes and have had to do minor touchups on each one after gluing. What has worked best has been to take a very sharp Xacto or razor blade, cut a small slit, and inject Super Glue in through the slit or hole. It can help to have some kind of very thin spreader to help reach in to the furthest point where the existing glue failed to bind. Then press and hold with painter's tape until dry. Because the slit is very clean, it's impossible to detect below the clear coat.
I don't think you should just clear coat over it and hope for the best. You'll have some flex there, and sooner or later it will crack and likely separate even more. Try what I suggested on an inconspicuous spot or a test piece, and I think you'll see that it works pretty well.
Looks great by the way!