i have done several times on the R/C planes
first you better use resin finish, sand with 320 grit and completely vaccum
seal the edge of the covering as Jim told, low heat, but enough to anchor firmly
then, the best way to bond it properly is to use a heat gun and a soft cloth do press it over while the glue is active. i never use the sealing iron to seal over sheeted surface, only to seal the perimeter of the covering and then taut everything with the heat gun.