The "glue" isn't glue. It's a vulcanizing agent, which work with what's on the patch, sort of like a 2 part glue or epoxy. For it to work correctly to make a secure permanent bond, you have to let it dry completely before applying the patch. No blowing on it for the impatient because the water vapor in your breath can be a problem.

Once the patch is applier, you'll want to stitch it down. They make a specific tool for the job which is basically a wheel on a stick.

The purpose is to apply concentrated pressure to force the patch down into the tube so they bond as one. You don't need the tool, and can use the rim of a glass rocking it back and forth working around until you've stitched the entire patch down, especially the edges. Then WAIT a few minutes before removing the celophane, working from the center outward (it should be pre-split to make it easier to start in the middle).

BTW- the time involved in doing a proper permanent patch is why I carry a apsre tube rather than do a field repair. If you prefer field repairs, use glueless patches, then if necessary make a permanent repair at home.