Hi partner ... I see you are using several cameras, one of which is a Nikon D750. Your challenge is to make an in camera double exposure. Here's the manual to this camera that explains how to do this: https://www.bhphotovideo.com/lit_files/320669.pdf
If you would prefer a different challenge, let me know and I'll set another.
If you would prefer a different challenge, let me know and I'll set another.
This challenge is just great and thank you for providing even the manual for this.will do :)