Thank you very much for your interest! 
Most of my images are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0), which allows you to use my images for non-commercial use as long as you add appropriate attribution and re-license all derivatives under the same license.
If you want to use my images for commercial use or if you are unsure, please use the contact form and let me know which image you want to use and for what purpose. I am inclined to license my images for free or for a small fee for projects I feel may be suitable.