How does somebody get into the trailer producing business?

I'm a film student trying to find a way to break into the industry. I've been really good at editing for a while and I love making trailers, sometimes to get people into making a film with me I shoot a trailer myself. Since people really enjoy some of the ones I put together, they get really excited about making the movie with me. I keep looking up certain companies to try and apply as an intern, but the majority of them are based in L.A. and I live in Boston currently. What do I do?