Adds interest above with swirls. Height: 25" Width: 11-1/2" ... thinking that a large mass [a headboard is] needs a soft lightweight look, and that's a balance too... https://www.houzz.com/products/twirl-1-light-wall-sconce-in-golden-silver-prvw-vr~119209437 https://www.houzz.com/products/maxim-22005-twirl-1-light-pendant-prvw-vr~93186614

If floor has drama, with charcoal or pattern of 2 colors, you don't need this, but here it is. Contemporary print resembles an intricate inlaid tiling of different marbles, with a dramatic contrast in tones. Textural, organic, modern, and dramatic. Eco-friendly, PVC-free. Uses water-based inks. Removes cleanly and completely, without damaging your walls. https://www.houzz.com/products/marble-marquetry-peel-and-stick-wallpaper-2-x12-rolls-prvw-vr~118668092

why pedestal? (you can still do the beadboard if you like). pedestals are for bathrooms w/no wall space. you have enough to do a vintage style vanity. you can redo any antique or vintage furniture piece and add a sink. it's not difficult and would totally work w/your paper. plus you get some storage. this is my favorite look when you have a small, wall to wall vanity like you have. this is a board and batten wainscot. you could do a similar one and paint it white or charcoal. do a vanity like this or what i've suggested below. or, purchase an open shelving one like this (it comes in smaller sizes) Or, build one yourself. it's not difficult to make one of these you could even get something newer and paint it. or add a marble remnant for the countertop I'd do something like this and paint it a cool color. top w/a remnant piece of granite or soapstone or something. Do a headboard or shiplap right over your paper if you like. for the flooring, I'd do a porcelain tile, maybe a penny round, (like one of these copper/bronze ceramic sheets. the bottom left is at lowes. top one is tilebar.com, I believe) or this hex tile that looks like wood , or even a herringbone mosaic in this dark charcoal to work w/the paper. and if you don't like those ideas, do a Console style sink, not a pedestal. these look better

None of the above. Pre-pasted is OK, but you will want to apply paste anyway, so it doesn't really matter either way. Peel and stick will do half of what it promises, after a little while it will peel off, and not stick, plus, as Hallett just posted, it's nearly impossible to apply well.