Just remember that if your character is a Mary Sue, they will not be accepted. You can go off the stereotypes of Zodiacs signs or off the story and such of other constellations, but have both negative and positive traits. And try to be creative.

Form:

Constellation Name:
Human Name:
Age:
Gender:
Sexuality:
Personality:
True Appearance: (For this and Human Appearance try to use a description or send a picture)
Human Appearance:
Likes:
Dislikes:
Power(s): (2 max)
Rivalries (if they have any):
Relationships: (Friends and partners/crushes, also of they have any prior, which they likely do)
Knowledge of the Human World: (What do they know about Earth? This comes into play later on.)

Have fun with making the characters, stick to the constellation for true appearances, and you may tag (just tell me where you're tagging me so I can find it)

Good luck!