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Give it a name, stats, and an ability.
For non-Jojo fans, Stand names are music related (singers, bands, songs, or albums).
Stats are Power, Speed, Range, Durability, Precision, and Development Potential (basically, how much you've developed your Stand), and are graded from A to E, with A being the best, and E being the worst (except for Dev Potential, where A means you have a lot left to learn, and E means you've completely mastered your Stand).
Abilities could be literally anything: walking through walls, turning people into dinosaurs, placing zippers on people, just go crazy with it.
For example:
>Stand Name: 「Eye of the Tiger」
>Ability: The user can control the minds of any species of the family Felidae (basically cats, tigers, lions, etc.). They can control multiple individual cats at once. They can control them up to a range of 100km. They can also see through the eyes of a single cat, albeit with the partial colorblindness that a cat has.
>Stats:
>-Power: A
>-Speed: D
>-Range: C (note: this is for the Stand itself, not it's ability)
>-Durability: B
>-Precision: D
>-Dev. Potential: C
