[dad911]

Take the time to lay out dry rows. First pull a parallel line to one of the longest walls. Then lay out the tile to see what the end 'cuts' will be like. If the room is out of square, or 1 wall is off, don't have narrow pieces on that wall (narrow cuts will make it more noticeable) ( a 1/2" variation is more noticeable in a 2" tile row, than a 1/2" on a 9" tile row)

You can also vary the joint a little to make up some space, especially if the room is large.