Image training is like looking through a foggy window what you see in your mind's eye is not like watching a TV or a movie on a cinema screen. That's why you need to describe what you see, out loud, so that you can hold on to the images and long enough to describe them.
Sometimes the first thing that comes to mind is an image that you have seen before somewhere in your life, like a memory, start describing that memory. That is, what an image stream looks like.
Alex
