Hi, Sky. You will end up with a mismatch someplace, so the best place to start is the most hidden corner. The door where you enter the room most often is the key. You want the mismatch close to the door so that is the last place you see. If you start from the corner opposite the door, the mismatch will be there and most visible, so it will look like you have done a sloppy job on the whole thing.