I think you'd be good at film studies.
I haven't come across this in my astro-readings, but I think Neptune rules film. It also rules your horoscope MC (career point, 10th house cusp) and conjuncts your sun.
Neptune deals with unreality, both positively and negatively. If you think about a really good film, the viewer gets pulled into its story and plot, as its own world. But actually, what goes into a film is acting, directing, music, makeup, costumes, stage sets, cinematography, editing, props, special effects, and so on. They are real, the film is imaginative. [True to some extent with documentaries, if you think of all the editorial decisions they involve.]
Screen-writing and editing are great (your Mercury is also ruled by Neptune) but film is such an integrative field you'd probably want to learn a lot about its different facets.
Just a couple of caveats: Film is a tough field to break into, so anything you can do now to investigate its different career paths would be good. Any practical or educational experience you can gain now would be good. Maybe your school has a film society or drama club that can get you some credentials. [If you don't want to act, get involved in stage-managing, lighting, props, or some such.] English composition or graphic design, ditto.
Maybe you can collaborate with some fellow students and mount a few short pieces on YouTube.
Think about your higher education. There are some good (and highly competitive) university programs out there; but also some interesting 2-year college programs, like animation. I think most animation these days is computerized, so if you have technical skills, that's a big asset.
Above all, develop your perseverance. You can't get discouraged by rejection, but can develop your spirit to learn from it and do better next time.
Just a side-note about Neptune. It also rules drugs and alcohol, and you are liable to be highly sensitive to them. Avoiding or minimizing their use is advised. Ditto with negative people. If you can't avoid them, it would be good to develop strong psychological boundaries.
Good luck, carmelpudding.