Some ppl do use Modge Podge for adhesive, but I don't. The only thing I ever use MP for is for sealing a project. Otherwise I use the Xyron runners, or TomBow ones.
MP can be frustrating (in my experience). Nothing is worse than having a project totally finished, only to ruin it with MP. :cursing: If you do use it, try a sponge brush and do it in 2 very, VERY thin coats. Put a tiny bit of MP on the brush and use long strokes on the project. I use so little MP on each coat that sometimes on the first coat there are spots without MP. My theory is that you can always add more, but you can't remove it!
Good luck! Let us know how it turns out!