You have to understand the nature of light.
In aptitude tests, I scored highest in music.
There are a lot of directors who are knowledgeable about images, and others who aren't.
It is also difficult to articulate the subtleties in cinema, because there aren't words or metaphors which describe many of the emotions you are attempting to evoke.
Billions of people have seen and been influenced by movies in the short history of this industry.
You are always a student, never a master. You have to keep moving forward.