Post pics in a comment here and you will be advised peel and stick are not ideal in any kitchen or bathroom.

Ah sorry, thought the photo was attached to the post. Here it

@User can you please elaborate what you mean by "doesn't work design wise"?

There really is no way to fix this, as the design is in the way the stone is placed on the product. You have to figure out how to alter the seams and the way you place the squares before placed. I would redo. BUT - where is the stone placed? You might want to rethink the product. It looks like it could get dusty/dirty easily, and catch on clothing because it sticks out from the counter.

You can"t apply tile grout on this type of tile. You can try gently applying in the tile seams - the tile calk color" Charcol"

What is behind it? What are you covering up? Why did you choose a stone look here? Can you post a picture from further back? Commenters may have suggestions for an alternative solution that will look better.

It's a do-over!

I am sorry, but it doesn't look good, and I am not talking about the "line down the middle". The uneven planes of it, the dark color, the way it doesn't belong in that space there, the whole idea of stacked tile there. So, it is a do-over. What is behind it? What were you trying to cover? If we know that, perhaps we can suggest alternatives.

Thanks for the feedback everyone. I'll be starting all over!

Cool! Maybe post more pics to get help on other materials that you will consider.