If you put on a big, genuine smile when you are nervous, you seem more approachable and the experience may have a more positive outcome.

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  • How to Smile @ wikiHow

    Excerpt: Expect smiling to be difficult in some situations. Smiling on demand can be difficult, whether it’s for a photo or for the sake of keeping mum happy when the relatives you can’t stand visit. This is because you are feeling self-conscious or you lack a genuine reason for smiling. In these sorts of cases, smiling needs to come from your memory of good smiles along with a little self-kidding or jokes in the head.

  • 10 Secrets for Instant Self-Confidence @ the change blog

    Excerpt: The one-second tip for when you’re feeling nervous and unconfident is simply to smile! You don’t just smile because you are happy and confident – you can smile to make yourself feel better. The act of smiling is so strongly associated with positive feelings that it’s almost impossible to feel bad while smiling.