Here's my first Battle Back that I made for my game. Feel free to use it however you like, just give me a shout out in the credits, and a link to my profile on this site.
The image is composed of the default "Clouds" and a modified "Port" both from battleback2, a pattern stamp of sand for the beach, and several elements from "Outside_B" in the fore and background. The only part that is technically mine is the water, which is from a picture I took at Pensacola Beach, and then used the Smudge Tool in Photoshop CC to make it appear painterly.
I put it in the battlebacks1 folder in my game, and it works just fine.