Melinda...I use a 2 oz. dropper bottle I got from my vetrinarian to apply the glue, then use thumb and forefinger to swipe the glue into a thin layer. I let it set for a minute before applying the paper and use a burnishing bone to make a good bond (the hard back of a single edge blade or the outer case of a box cutter work fine as well). If you use one of the fabric glues in this proceedure (I use Mighty Muck, but they all probably come from the same vat), you can let the glue dry (if distracted) and attach the dust cover using a tacking iron.
Where I live (we can swim in the air) the attempt to get a drum-tight dust cover is often futile, and sometimes damaging. The paper can exert enough force on the front of the frame to cause the joint to open. I'm happy just getting a good seal to keep the dust and bugs out.