26. As you'll see, the horizontal mortar is now aligned with the window border:
27. The final step is to offset every other row so that it looks like the bricks are staggered. We'll use Offset Image dialog (Edit->Filter->Offset Image...) to accomplish this as well. Note that instead of columns, we're adjusting rows this time:
28. Finis! Because we used the Paint Wrap option when needed, the texture should tile seamlessly.
I hope this tutorial has helped you to understand the basics. If there is anything that isn't quite clear, or if you have any questions or comments, you can email me at this address, or post them in the forum.