83 mustang rear window

ok i have a convertible 83 mustang and one day i unzipped the zipper, put the buttons on, started putting the top down.

3/4 of the way down, i hear PSHHHHHHHHHHH

the back window shattered. :banghead:

so then my grandma was kind enough to get me a new plastic one so this time it won't break, but i have not a clue how to install it.

can anybody tell me how to or give me a link to a tutorial?

thanks you everso much