Glassing my planes is my favorite part of the job. I use the west systems and .5 or .75 oz glass depending on size of craft. I have no problems with wrinkles but here is how I do it.
First, I cut the glass with rolling fabric cutter allowing a good overlap all around the part. I make sure the part is absolutely sanded perfectly and that is is clean (vacume,air blast and tack rag to be sure). Then I carefully lay the glass on the part, pull out the worst of the wrinkles, then using a soft paint brush with natural animal hair, I gently stroke across the glass. The wrinkles will work out easily and the brush imparts a charge to the glass that keeps it conforming to the part. I mix up my epoxy ( I use the pump dispensers for no hassel mixing) and add about 25% pure alcohal to the mix on the first coat only. I pour it on and work it over the glass makeing sure to get good penetration. You can tell by the color of the wood as it gets an even wet look. I then take a old credit card and squeegy off every drop I can making sure that the overhang gets a little wet too (makes sanding the excess off easier).

The next day I sand the over hang off and repeat for the other side. It usually takes me about 3-4 days to complete the first application. Once complete I do a quick scuff to knock off any dust or snots then apply a second coat of full strenght. It will be much thicker but it spreads easy over the coat below. Once again I remove all the excess, looking for a wet look just deep enough to cover the holes in the fabric. I then allow the parts to dry for up to a week as sanding gets much better with a proper cure. I use sandpaper that has improved self clearing properites and dry sand just enough to break the surface giving a nice flat surface for the primer to bite too. If you take your time applying the epoxy when it is wet, sanding is not a chore.

I keep a rool of dust free heavy duty reinforced paper towels handy and lots of alcohal for cleanup as I like to reuse my mixing cups. I buy plastic mixing cups from my local automotive paint supplier. They are low and about 3 inches across so they wont tip over and are easy to wipe out and clean.