First, do whatever is available, remembering no role is to small and request on audition as often as possible.
Second, always be happy and smiling even when you're sad and scared, we all want the same thing, the best outcome placed on film. You act everyday you leave your home, so take the time to know the role, make others feel it, and do in 30 seconds or less. No guts, No glory.
Third, you are a product waiting to be captured, make the most of every opportunity offered, its all on you, if you're not scared of acting you should be, that' scared feeling is the character you produced waiting to be discovered.
An agent is in your future, right now that role is filled by desire, a need that burns within all of us when we start out down this road to being an actor. The best or worst thing about this road is, we are always learning and growing with every step. Feeding the dream keeps it alive, simple, right?
Keeping the faith in yourself, is all on you.
James Thorne