It took a long time searching for the source.

This was earliest source I could find in Google Image Search, which is a great way to track the life of an image. I go to the oldest reference and search from there for copyright information. I did not succeed with this image. My search took me here to tumblr 11 months ago.  I love the picture and would like to use it but source it properly. Did you create this?

Let me know how you want attribution if used for educational purposes?

Check google image search here.

A head 4 Headless 13