I am the author of the image gl-cloudy-sky-01.jpg below, I put it in the CC0 Public Domain. This image is free for any commercial or private use.

You can right click the image above and save it to your computer.

Tags: background, cc0, cloud, sky

Description:
A cloudy sky photo, which can be used as a background for your designs. This image was captured using Canon DIGITAL IXUS i digital camera somewhere in Indonesia in 2005. This photo is in the CC0 – Public Domain License, you are free to use it in your private or commercial projects.

File Name: gl-cloudy-sky-01.jpg
Image Dimension: 1024 x 768 pixels
File Type: JPEG (90% quality)
File Size: 115 KB
Author: GraphicsLearning.com

An high resolution 2274 x 1704 pixels version of this image  is available for purchase.