Remember you may be teaching people who are seeing this technique for the first time = like me, and at the end I came away with so many questions. Looking for another tutorial that better explains technique and terms. Volume too low as well.
If you paint it with glue and it does not stick you have let the process dry too long, I have seen a vid where they just breath over it and it helps to make it stick, I have tried this only a few times, so I am just commenting no expert, be blessed.