Thank you for the reply! The add-ons are going to be vast in number though, and really tiny in cases of the sequins and beads and feathers, so marking them might end up in a lot of messy scribbles that make no sense...? ^^; The glue and then sew method sounds good, but what kind of glue would you suggest in this case?
Light travels faster than sound. That's why some people appear intelligent until they open their mouths.