This is actually a pretty old piece by Vituris that I got as part of a trade. It's a repeating pattern, but the original background was a little too brightly colored for me (it was like neon green), so it sat in a folder for a long time. I stumbled across it again recently and just finished editing it to have a more muted green background a few days ago, and voila!

Original art © Vituris
Rel © me