ditto to KR. (I wish you would have tiled all the way up though)

You have such a tall ceiling, that large expanse of wall if going to look bare.

This one looks pretty good. I like the warm wood, the copper, the plant, and the multiple shelves.

don't be afraid to mix in some mixed elements. with a white/gray kitchen, you need some of these warmer/organic tones to keep it from looking too sterile.

I'd prob do a sconce or two (or even a pendant) See how this one looks? tried to find open shelving w/no tile and a higher ceiling.

other visuals.

schoolhouse style sconce.

Here's one in the white shelves

I notice you have a light in the ceiling. if you don't want to do the sconce, you could opt for a pendant

shelves partial, with pendant,

Schoolhouse style pendant shown here

and fully across w/two sconces. just so you can see

You could do a shade darker or lighter than your floor if you like the wood.

I'd take them side to side.

make sure to add some greenery to the decor. even some plants that spill over the edge.

Don't forget the runner