Creativity needs to be practiced and demonstrated. Ideas are not static. They do not just sit politely in your grey matter and wait to be plucked out at some convenient time. Your ideas are far more alive than that. They demand dialog.
Ideas require conversation.
Creation is an interactive process that requires attempts and revision and more attempts at revision. What you start out with may have little resemblance to the present form. And this is good because ideas are not written in stone. Ideas were never written in stone. Ideas require revision.