Final answer:
The person described in the question is not identified in the provided references. An example of such a person is Greta Gerwig, who directed 'Lady Bird', which can be interpreted as the name of a flying creature.
Step-by-step explanation:
The question is inquiring about an individual known for her roles in independent films who made a significant impact with her first effort as a director, creating a movie named after a creature that can fly. Unfortunately, the given references do not directly answer the question as none of them are directorial debuts by an actress known for indie films and named after a flying creature. However, an example that fits this description is Greta Gerwig, who directed Lady Bird, which could be seen as a metaphorical reference to a bird, a type of flying creature. While Lady Bird is not listed in the suggested references, it is a well-known directorial debut fitting the description provided.