You don’t need a wide smile, a snapshot pose, a big ‘ole rubber beam, or a wolfish grin. Rather, you need just a slightly open mouth with a friendly upturn of the lips—a small smile. The demeanor I’m promoting is an undaunted, comfortable-in-your-skin, shiny business game face. Consider the following:
Simple and effective. I have seen brilliant players use this and disarm an entire boardroom. The smile and associated positive composure while remaining on message is a very effective tool of persuasion. Until it became habit, I placed subtle reminders ( smiley face) into my notes to remind me.