I has to do with lighting obviously and on placing the subject in relation to the camera.
What colors to use and what camera angles.
I guess ur short film was criticized and ur being told to go study those so u can make corrections.
Lots of the set-up rules in camera work are similar to theater and foto shoots, even art.
Unless we see ur short film it is hard to make suggestions.
I would look up what is said about other films and compare to ur production. Even peek at a couple of films on youtube and get a feel of professional work.
What colors to use and what camera angles.
I guess ur short film was criticized and ur being told to go study those so u can make corrections.
Lots of the set-up rules in camera work are similar to theater and foto shoots, even art.
Unless we see ur short film it is hard to make suggestions.
I would look up what is said about other films and compare to ur production. Even peek at a couple of films on youtube and get a feel of professional work.