2) Work at one until it's done. Do what it takes to bring the original vision into reality, no matter how differently it looks at the end.
3) Share. Don't just share the finished product, but tell about the experience and what you learned. Even if it didn't turn out well, find the lesson.
4) Repeat. Keep doing this so you get better at each step. Repeat until you've found a voice, a place or the people who need what you can give.