You look like your using reference planes to set your image plane up....
Try just using a Poly plain and assign the image to the plain like i did in the dvd... Using the poly plain will be alot less work to set up.
I just use the default setting and unites....
I am enough of an artist to draw freely upon my imagination, knowledge is limited, imagination encircles the world. (Albert Einstein)
https://www.artstation.com/kurtb