This wiki article may help:
Pasting a strop - a photo tutorial - Straight Razor Place Wiki

The wiki did leave me the question of pasting the leather vs. linen. It appears you can do both. Not sure what, or what to notice, or what should be done first. I'm also not clear if you need a set of leather/linen strops without paste, and strops of leather/linen with paste? Or perhaps the webbed strop is sufficient enough without paste?

Jake