About 4 years ago, I purchased a glass top stove. The backsplash was crying out for something dramatic. Being the impatient person I am, I wanted something, and I wanted it NOW!! I didn't have the time, patience, or knowledge to add tile. So, I opted to paint "tile".
The most time consuming part was the planning and measuring. I decided on 4 inch "tile", but found that it would not center evenly under the range hood. Therefore, I opted to add vertical tile to either side to make up for the imbalance. I used the existing beige paint as the "grout" by using 1/4 inch quilting tape as my "grout line". The "tile" was painted using regular craft acrylic paint. Fortunately, it dries quickly...another plus for impatient people like me. I added shadowing using glaze mixed with dark brown paint then added some dry brushed white paint for highlights.
Three coats of polyurethane were added when all the paint had dried sufficiently. I've washed it many times, and it has held up very well. My goal to fool family and friends worked...everyone thought I had tiled the backsplash.