Do you make sure to wear safety goggles so you don't get anything in your eye?
For artwork, Krylon makes an acid-free spray adhesive that works great. For a temporary bond, spray one surface only, and for a permanent bond, spray both surfaces. The pieces should be burnished with a brayer (soft rubber roller) and/or put under weight overnight. For other than artwork where acid-free is not an issue, 3M or Elmer's makes spray contact cement. Same as above, spray one surface for temporary both surfaces for permanent.
Brigham Young taught the pioneers to pray for rain to water their crops, and to dig ditches while they were praying. We do everything we can, and God makes up the difference.
