It won't be easy, might need a quarter round trim - it won't be easy to remove, either.

Not sure what the goal is, or what room the cabinet. Something else....and the contents are not, ( at this point) edited or curated enough to deserve a highlight with any paper or paint.

I'm certain the content may be very special to you , but when you collect to highlight and display? Edit, prune

Depends which you want most noticed: ) te items or the backdrop

Grass cloth wallpaper might be easier.

Thank you. The room is in the kitchen. I wanted to hide the plain white background and give it texture. Looking at my photo again, I agree it looks messy. What items would you eliminate?

you eliminate?

yvonnecmartin, do you mean grasscloth may be easier than the wall papers she suggested?

I always notice when a post is of a messy room, stuff on the floor, etc and now I've done it myself.

This blogger used a peel and stick textured paper and she offered her instructions. If your shelves are removeable, the application would be easier (less cuts).

https://thehomesihavemade.com/wallpaper-back-of-bookcase/

We're seeing the cabinet box, the kitchen, but not the box within the kitchen.

Not sure what you are going for......its a box with stuff in it as of now. Looking as a cabinet without a door. Which is perhaps all you need: ) A door.

IMO why bother since the back wall is hidden with stuff more info get more help IMO apint the back wall a good color that works with maybe 1/2 the stuff you have there now.

I love the Asian touches in your decor. Looks collected and interesting. I’m not sure what you’re trying to achieve in that cabinet, but feels like the wrong focus in a really nice room. The only thing I might do is swap the tables— seems the chairs go with the one in the center now and its scale fits the corner better.

Given it’s a cupboard with doors, why not save the effort and just paint the backs - looks like you need for storage vs display so the backs will hardly be noticed. Were you planning on removing the doors and if so, complement the counter and backsplash.

Do what Skippack says. Take out the shelves, cover a piece of poster board that has been cut to fit, stick it in, replace shelves. No mess.

Yes, what you and Skippack suggest is the winner. Thank you.

And, I like some of the decorating suggestions. Going to try them.

Just wanted to say I have the matching ruby glasses to yours. They were part of a breakaway centerpiece at my wedding many moons ago. Every woman got to take home a glass with flowers

Similar to what someone else suggested. Use foam core board, stiffer than poster board. Someone I know did this with fabric on a built in bookshelf .Cut foam core to fit snuggly, apply grass cloth, maybe even fold over the edges of the foam core board.

Lots of options for buying upholstery tack strips (nail trim, etc) with a pair of sharp scissors it should be relatively easy to cleanly cut and adhere grass cloth to the back. Might want a small hammer or specialized hammer so you can get closer to the corners. But I can’t imagine that a good spray adhesive wouldn’t do the trick as well.