Sold my vinyl static cling sunroof cover, and the buyer would like instructions...(go figure )

My search for instructions failed--anyone know the link?

Or have some words of wisdom on the install?

I haven't done it, but thought it goes something like:

1) Wash sunroof with Dawn dishwashing liquid (to remove any polish, etc)

2) Apply on warm day, over 80 F.

3) Use spray bottle to apply lots of water (? only water?) and starting in the middle of the vinyl cover, squeegee the water and air bubbles out to the sides until no bubbles.

4) Allow to bake in the sun for several hours (to 24 hours?)

Don't apply Zaino or polish to cover?

Thanks for any help--poor buyer is waiting