Can headliner be installed with glass in?

Blucuda413 said

I used to work in an upholstery shop and that was common practice. The last car it worked on was my son's E Body when we installed his new headliner.

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So just mist it? Do anything else? Mine has small wrinkles like that also, but I think where I went wrong was not slitting the now pockets far enough up and when I went to stretch it, it interferes. It was my first time and I think it turned out pretty good, though.