Judging the edges of your chocolate, trim one side and the top edge so they are neat and square. Save the cut off bits. Measure 4 inches and cut off the other long edge of the chocolate. Now that you have a rectangle, slice the chocolate into 2 inch wide chunks. Assembling is really easy. The tiles are a bit pliable which is really handy. Pick up on of the chocolate tiles, the surface that was on the bottom is the smoothest, so you will want it on the outside of the cake. Flip your chocolate tile over and spread a little melted chocolate to the bottom of the tile.