Ideally, you need to advise the power is switched off as I’m sure some people will use a metallic scraper or similar to feed the paper in behind the socket cover and that could be dangerous if the power is still on.
Good video but what happens if its the wallpaper im pasting instead of the wall? it would be awkward to paste the bottom of the wallpaper when its hanging on the wall
Joe, should have painted the wall dark blue wher the seems meet. When the paper drys firm it will shrink and leave a fraction of a millimeter visible between the paper giving you a visible edge because the wall is white.