A: The only actor you need concern yourself with is yourself.
You can be the star, with the best roles an actress could ever have, if you make that your end result, your dream (in general terms).
After defining this end result, then go after every part that emotionally calls to you, but DO NOT make any of them HOW your dream is going to come true. Your dream is much more important than any part. Your dream will dictate the right parts. You can’t know all that is involved. Your idea of the perfect movie may not be the perfect movie for your dream to come true – it might even work against you. Trust the Universe to do its part, to pick the roles and parts.
Your job is to hold onto the dream, never waiver or doubt, and then to MOVE with it (as you sound like you are doing), but don't attach your hopes and expectations to the means (only to the ends).
Mention me at the Oscars!