(I have had other CMVs deleted for being too rambly and possibly for having more than one view to change, so I'm going to keep this one as brief as possible.)

Carrying yourself with confidence, good posture, and a relaxed, easy demeanor and grin is all anyone needs to "get their foot in the door" (dating-wise, of course).

Let me know if you'd like me to elaborate on anything in the comments.