For the edge on the corner of the wall, there are a couple options. If those tiles are cut and sharp, I'd get a tile stone to smooth them out. Clean out the grout that is overhanging and put some caulk on the edge. OR Remove the half pieces, scrape off the thinset and put the same pencil trim up. If you broke the tile, cut new pieces. First time installing tile? Get the Bucket Bundle! A $130+ value for just $99 . Includes 3.5 gal bucket, 3 sponges , 1/2x1/2" notched trowel, 1/4x1/4" notched trowel, margin trowel, grout float, paddle mixer, bucket scoop, 3-in-1 spacers, rub stone, knee pads, gloves, safety glasses, and wax pencil. For Sale: 2 brand new pieces of Schluter Quadec Matte Black Square Edge Tile Trim These pieces are almost never in stock and order in only. Two pieces that should be sufficient for most washroom renos. 8ft long each. Leftovers from a washroom reno. Brand new, no scratches, good to go.