What message did Melies express with his film Voyage to the Moon?
How did the use of painted sets and exaggerated costumes affect this message?

Melies expresses the message that there are new techniques and ways of communicating a fictional story. He shows us that cinema is the ideal medium to tell and exploit stories with difficult subjects to express themselves in another way.
For centuries, the moon has been a fascinating subject because it is unattainable to explore it. At some point in our lives, we have tried to find a means or a solution that brings us closer to the moon. And, it is precisely this human concern in complex issues, that Melies exploits and manages to attract and identify with his audience.

The use of exaggerated costumes and painted sets bring the interpretation of their reality closer to the audience and emphasize the development of the story. They help to transition time and place throughout the story.