I am frequently working to create background textures in Photoshop to be used on the web. Unfortunately I usually have to guess, or just use freebies from other websites.
I would like to build my own textures in Photoshop and check if they tile properly before exporting the image. Is there a way to do this quickly? I remember a method using offset, but I'm not familiar with the tools.
Below are a couple example background tiles so you can see what I'm talking about:



