There were a few problems that were experienced; as the mosaics are mixed materials, they were uneven and sometimes wonky on the sheet. They are also difficult to cut especially the glass pieces, which end up with jagged edges. We had to replace quite a few that were placed around a window sill and edges. If I had to do the work again, I most probably wouldn't buy these type of mosaics. My kitchen is still a work in progress but I've attached a photo of a section that is done.