Tell me the size of the poster.

A4 and A3

And the main heading "Les Sylphides"

yes

Hi

Must Have:
- long white tutu on a female dancer (one or more, or a couple)
Name of the ballet: "Les Sylphides"
Place & Dates of performance: Byron Theatre 19th & 20th July
"Byron Ballet"

At the end of your must have, you write "Byron Ballet".
It's an error ? or we must put this ? i don't understand in hierarchical information what it is exactly.
Thanks you