Wallpaper Around Windows Video
How do you get the wallpaper to match perfect above and below the window? You can't just draw a plumb line and hang the wallpaper. If you do the wallpaper pattern might not match the wallpaper that is already hung.
Most wallpaper, pre-pasted styles, expand when the activator is applied. In some cases, as much as 3/8" of an inch. Mark the wall with a plumb line that is 1/8" longer then the width of the wallpaper after the activator has been applied. Then when hanging the paper, keep it an 1/8" away from the line. That will ensure the seams top and bottom will look perfect.
Tim built custom homes and did ultra-custom remodeling for 20+ years before launching his Ask the Builder media presence. He was selected as one of the Big 50 by Remodeling magazine in 1993. This award gave birth to Ask the Builder in October 1993. Tim also operates https://DrawPlumbingPlans.com. His @askthebuilder YouTube channel was the first home improvement channel on YouTube.