Everyone is right. I didn't spend too much time with it, but was curious to see how quick everyone found the line. Had you not known it was two images would you have noticed?
Thanks for the replies. I don't think this is something I will be doing to my images now or in the future.
Yes, I would have spotted it. The line is simply too obvious. If you had used a bigger smoothing brush and lessened the hardness it would have made it less noticeable. -- Today I saw something that reminded me of you. But dont worry, I flushed and everything went back to normal.