Yes! You can use my images for whatever you need!
According to the use of the image you will need a free or a paid license.
My images published on my web or my other pages (Facebook, Google, Flickr, 500px, etc) are copyrighted under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license.
That means that you are free to share and use any of these images (for example to share them in your personal Facebook, or use it in your personal blog, as background in your computer or tablet, etc.), under the following three basic terms (yes, for free!):
1. Attribution — You must give me appropriate credit (for example: "Image made by Freddy Enguix - www.freddyenguix.com", or just my logo on the corner of the image), you must also provide a link to my web www.freddyenguix.com, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
2. NonCommercial — With this free CC license you may not use the material for commercial purposes. Contact me if you need a commercial license and I'll glad to provide you with one that fits your needs.
3. NoDerivatives — If you remix, transform, or build upon the material, you may not distribute the modified material.
For more detailed information of this free personal CC license click here.
For any other licenses, like commercial use, please contact me and I'll explain you the options and costs for whatever you need.