I would look into getting a head start by leveraging one of the existing blockchain companies that's looking for developers to build on their platform. Usually they are very happy to promote your project(s) on their social media, and/or offer you seed/bridge funding if you can create a compelling MVP. I would also urge you to look for the blockchain companies that are hosting hackathons, since that means they have money to blow on attracting developers. I know all this since I'm in the same boat as you :) Good luck!