Confidence is key
You'll never get a girl buy shaking in the corner wishing you could make your move.
(unless you want a girl to take pity upon your poor shivvering soul hehe)
be confident in all of your actions, but not over confident mind you,
confidence can reassure those around you that you are someone who knows your next action and knows what you're doing, while obvious overconfidence can make you seem haughty and more or less of a "know it all" (not sexy people, sorry n_~)