It's practice. The camera is a harsh mistress. With paint, all things are possible. With "film" there are compromises. Depth of Field, angle of view, color, angle of lens (it affects perspective).

Whats inside the square of the veiwfinder is not what comes out on the paper. As with music, the ability to take the scribbles on the page, and translate them to something else takes skill (which you have, trust me), practice, and some empathy for the medium.

You have the talent, the rest will come.