following this tutorial:[link]
but I modify it into ubuntu logo
resources (which are also in the link):
carbon fibre: [link]
similar work: [link]
Press the download button to get the zip file which contains 1366x768, 1920x1200, and 1920x1080. If anyone else needs different resolution, let me know.
P.S: If you post my picture in your blog, or somewhere else, or use it as a stock, please comment and leave the link. It is not like you will go to jail if you don't do it; I just like to see what other people do with my picture. Thanx