i just got done with my first plane, and it was a kit so i had to cover it all, and i did the wing in two sections, but my wing has some dehiedral(SPELLING), i din't use a hot sock or a heat gun and my plane turned out with very few wrinkles, i have a top flight heat gun and i set it at 250 but then worked my way up to 275, and i even went to 300 but 300 didn't work as well as 275, 275 stuck it well and shrunk it very well also

Good Luck!!!!!!