Yes, even if the first words spoken to you are, “My God! You’re a hideous vampire!” you can still be a feeble hideous vampire ballerina… if you want. You are allowed to bring ideas to the stage. You should be encouraged to do so. No one in the audience is going to bust you for it. It’s not like crowds boo a jazz quartet for bringing predetermined instruments on stage. It’s what you do with them that counts.