I heard Yad say, and I have found this out in my own, doing some "outlandish" things can make you feel immediately more confident. Kind of like what you feel like after you dunk on someone good in game of basketball. Just makes you feel good, perfect mindset to approach, I feel.
So if you have any just list them
If im walking behind a girl, i may straight up tell her she has a fine ass. Usually she turns and tells me how rude I am so I don't think theres any chance to close but it cracks me up, and its pretty much what is on my mind, on to the next one. Oh yea and other people within earshot may be something to consider