Dress one notch above what's typical for the situation
Have an expansive posture. Roll shoulders back, take up space (but not at others' expense), comfortable.
Touch (platonic and away from center of course)
Don't allow someone to cut me off. This is a pecking order sorter. Don't lose, simply continue speaking.
Compliment the competition. Show magnanimity, show that I'm not threatened.
Openly share shortcomings.
Increasing the level of eye contact is rewarding for the listener, so especially since I tend to give very low eye contact, make sure to increase it when I want to give a positive signal in response to something they're doing I'd like to encourage.
Similarly to eye contact, turning to face people shows my leadership and that I accept them.
Very important: be non-reactive. Take my time. Move slowly. Set my own pace. Don't be in a fearful pattern but one that's confidently energized.
Cultivate the belief in myself that no matter what, I'll be alright.
Don't waste energy getting worked up about things I can't change to my benefit. If I can improve a situation, act, otherwise just move on.
Anything that may seem strange or awkward about my choices is exactly what I need to wear confidently. Not being worried about people's responses reads as confidence.
Know my specific triggers and vulnerabilities to improve my chances of snapping out of it in real time.
Staying playful in the face of social rejection is very powerful.
My standards and principles are a core part of who I am and what I project.