The most important thing is to find your sound. You may have to make compromises in the beginning but people hire composers for a certain aspect they love of their sound. Be yourself, take risks.
Concentrate on writing stuff that you love and people will hook into your passion. If it ever feels like a job, you’re in the wrong industry. You’ve got to love it!
I really try to do my best every time I am creating a piece of music. I try not to just be quick or sloppy. I want my music to have a high quality of construction and to have the power to move a listener. This is my ultimate desire.
Music is a gift, let the others know about it. Release it in the web and don't be afraid of it. If the music is good, the rest comes naturally. But you have to be patient and work continuously.