Backgrounds can help fill in unused areas for high resolution monitors, and provide the texture and personality we have been trying to accomplish throughout this tutorial. Rough text and graphics match textured backgrounds very well. The line in the center of the image appears when Offset filter is applied. There is also a slight vertical seam, but we will repair the horizontal one first. Selected area moving to cover light line.
Arrows represent direction of move as well as the approximate final position for selected area.
Pasted copy is moved to cover the vertical seam. It will come to rest, aligned to the horizontal pattern, just below the edge top edge. Never make adjustments at the edge of the tile as you may lose the seamless effect. Luckily, the textured backgrounds I see in commercial sites are easy to produce with photo manipulation software. I am only going to cover a few basics this time, as the topic relates to our rough theme.