Solartex is pretty hard to screw up. It goes on so easily that most procedures seem to work.
Like RBACONS, I add extra adhesive around the perimeters.
I don't believe everything Solarfilm says. For instance, they say that pre=colored Solartex requires no clear coating. Try it sometime. You'll end up with a dirty, impossible to clean, surface.
Their advice to sit the covered model in the sun, is spot on, however.