You're walking down the street. You walk past a guy around your age, and a few second after you pass him he goes up to you and tells you something like "Excuse me... I just noticed you passing by and I just had to come talk to you, or else I'd be kicking myself all day... you and beautiful and you have an amazing style/way you carry yourself/posture/attitude. I'm Guy."
Simple, yet sincere and respectful. Obviously he is interested in meeting you. Would you talk to him and see where it goes or would you label him as a creep right away? Would you not talk to him if he was unattractive? What would you be thinking the whole time?
I would shorten the line and keep it really simple. Girls are a bit thrown off/confused when you come up to them the first time, so a line that long would confuse them. And if they are confused, doesn't matter what you say, they will automatically think you are a creep and give you that awkward look of "HUH?".
Just use the line "Hey! I just had to come up to you. I think you look really beautiful today. What's your name?"...eye contact and don't forget to smile.
dude. there are things a man should NOT do. Approaching a random woman on the street is one of them. You're chances are about 1 in 1.000.000, even if you look like Brad Pitt.