Technical challenges:  I keep having mixed results with glue. Either I am using the wrong kind (though I've tried several) or not using it properly. The embroidery is mostly decorative but is also helping to anchor collage pieces that had started falling off. How do you know when you're finished with a project like this? Well, after several months had gone by and I couldn't think of anything else to do, it seemed like a good idea to just stop. Some kind of fixative might have been a good idea too? Next time. The pieces were too fragile to survive in anything besides a frame, so now they are safely under glass.