I used to do a demo in the training centre with palace super grip, Got a 30 x 30, 9mm floor tile, half loaded the back of it , cladded it on the wall, drew a line under it and brought everyone back to have a look half an hour later, still bang on the same line.
Get your tile line in the middle of the room, stick your first set of tiles on that line and level them off, tile down to the floor cutting in as you go and so on
Get your tile line in the middle of the room, stick your first set of tiles on that line and level them off, tile down to the floor cutting in as you go and so on