Do you use any fixative over the top? Does the acrylic paint sluff off at all?
I didn't on these, but you could spray it with a fixative or if you cut or punch out smaller pieces (like the circles or squares on my neverending card) you could use clear nail polish. It would take alot of polish to do a whole page! When the paint dries I guess it could flake off if you handle it too roughly, but I haven't had it happen yet anytime I've used acrylics, even when I cut them. For these papers they have kinda a grungy look to them, so if it did happen I think that would just add to it.
I'm so glad you like the tutorial! I was debating on whether or not to add it since this paper doesn't necessarily appeal to everyone, but it can be adapted to fit everyone's taste!