I have tiled the end wall in my bathroom (above the end of the bath) I am about to tile the longer side wall when I realised that this wall isn't straight (the end wall was perfectly straight)- measuring the height of the wall one end is about 3/4 inch higher than the other end (this is from the top of the bath to the ceiling). What is the best way of tiling it so I don't end up with a wonky line of tiles around the top? looking at other replies would it be a good idea to tile vertically rather than horizontally starting at the shorter end of the wall so that I could get the rows to gradually go up at the other end (i.e making some of the gaps a bit wider as I go)?