Get the right person for your cause
Hopefully your organisation already has a link with a celebrity – someone whose personal circumstances or professional work has given them some experience of your issue. If not, the first step is to do your research and find out if there are high profile figures who might have an interest in what you do.
Think about whether they are a good fit with your organisation. Are they appropriate for your political, ethical or moral position? Above all, you want a celebrity ambassador who is genuinely enthusiastic, and willing and able to talk confidently on your behalf.