I think there are many different avenues. You might try adding your work to stockmusicsite.com. I imagine indie filmmakers and radio stations are looking for material all the time. But the next question is if you want to make this your one main profession, I think you should make a reel. Then approach film forums where filmmakers are looking for music composers. You might find a project you like and it could go from there.. if you decide to try some royalty free music site, if I were you I wouldn't pay them anything to host your music. I did that with a photography website a long time ago. I thought I could make $1,000,000s selling my photos. It was not to be! It was a waste of money (though a good lesson learned). You might talk to film producers who may be looking for a different composer, only piano would be interesting. Though they might only take you if you are the jack of all trades composer and sound designer for their project. You have to learn how to do folley. Like when a character walks down the sidewalk you have to record that "footfall" sound in a studio. Simple dramas only require simple folley, so it shouldn't be so hard.
playing piano for a film sndtrk certainly has been done well before. In the film the social network
, which is a favorite of mine, in the opening credits we hear a descending m6 on a piano. It's a simple line, but to me brings out the idealism of the young college student in the story. By the way, that score which was wrote by Trent Reznor and Atticus Ross brought home an oscar for best original score.
Good luck! What am I saying good luck for?! Maybe we could team up and be another Ross/Reznor team of film scorers?!
thanks for your tips, they sound like good ways to get started at the grass roots end of the spectrum. Id be a bit wary of placing myself in that bracket at the get-go, rather than aiming for a relationship with a professional agent. As you say, solo piano has worked well as music score for a few films now, some quite big ones have either entirely, or prominently piano, so I think theres hope for us yet, tho the competition is no doubt fierce.
If you come up with a possibility of a suitable collaboration, do let me know, tho from what ive heard you can compose fine piano music yourself