This section is on the left side of the stove- the one I completed last fall is on the right. It's about 30 inches wide. (Sorry about image quality; I wanted to get a picture before I delivered it to my client.)
Above the stove, the client decided she wanted something different from waves, so in that space, also about 30 inches wide, I will be creating a breaching whale in black and white. Getting started on that one now. I'm really excited about a new material I'm trying out for this section: it's fiberglass mesh with one side sticky enough to hold a mosaic, but not so sticky that you can't remove and re-position pieces. Magic! Not having to fuss with glue makes the job so much easier. The self-adhesive mesh is available from many distributors; I obtained mine from Mosaic Tile Mania.