Tree Bark : This is my first time at this tecture thing, and I hope someone finds this useful. I offer it free because, although the image is quite clear when under 50% size, once you take it fullsize it begins to blur out some.
This image itself is quite large, so even at 1/2 size you have a good area with which to work.
If you use this, please rate and review. I'd like to know what I can do to improve :)