I have damaged wallpaper in a rented property - could someone please help me identify this wallpaper so I can repair it? Ive scoured the internet but can't find it anywhere, any help would be much appreciated!

Good day gentlemen, hope all is well with everyone during this 'testing' covid-19 pandemic time. So, my wife bought wall paper. :wall: ...and the kind she bought gets laid on the walls horizontally. :wall::wall: ... and have bulkheads in the top corners that are bowed, horribly out of square, and have rounded 'bullnose' corners, not square corners. :wall::wall::wall: ....and the walls are not perfect either, etc, etc, so that means we have to allow for edging overlap. And we are trying to lay a whole wall length; over 390 cm without cutting it into sections. And the laws of gravity insist on pulling the wallpaper downwards. She will not let me tear out and replace the bulkheads, nor do I want to do it. You get the picture. The very vast majority of sunshine and lollipops videos online are to hang wall paper vertically, and most of those seem to pretend you are in a perfectly square room. I first made a level chaulk line across the wall for the first top sheet, tried to measure and cut it out around the bulkheads, but that was just to hard for us. So then I figured I would lay my first sheet underneath the bulks heads, then the top sheet which is fairly smaller would be cut to go between the bulkheads. The remaining lower sheets should fairly easy ignoring the laundry hook-ups. The paper she bought has to be manually pasted on, so the thought was to get the sheets cut to the walls, do a few dry run rehearsals and then commit to it with the glue. I would hire a professional but I would have better success winning at Las Vegas than with the 'pros' around here. So guys, you were a ton of good help for my floor tiling project a couple years ago, thought I lean on you for some suggestions. Any comments and great videos for this scenario is much appreciated. Thanks in advance again, Bob Plumb