Nice video. I subscribed to your Youtube channel. It's funny because just today I was out celebrating 5 de Mayo and on the line I saw this group of girls who were pretty hot. I am new to the whole approaching random people thing but I decided to walk up to them and say hello. It was kind of difficult because there was a very loud music at the place (local radio station was installed there) and I don't have a very loud voice so there was a lot of "What?" but I managed to talk with them for a little while and look as confident as possible, although I have to admit I couldn't even feel my legs. Because of the loud music it was too hard to talk to the group as a whole and I could only talk to two girls that were close to me. There was one girl that was at least keeping the conversation going with me but while I was talking to her her damn friend grabbed her by the hand and pulled her away from me. I went back to my friends and I tried approaching later again, but it was as if all her friends were kind of blocking me from talking to her even though she looked interested... While I was away after first approaching I looked to their group from time to time and almost every time I cough this girl looking at me and then looking away right away.
First of all, good job. Those nerves will die down before you know it. That was a tough situation since it's difficult to engage a large group when they can't all hear your. That leaves you with two choices, the high risk high reward approach is if you feel the girl is in to you then bounce her away. "Hey, you seem cool, but it's really loud right here, lets go over there and talk."
The other less risky and perhaps less rewarding is to get her number quick. When the friends try to steal her away, just said say, "hold on just a second" to her friends, turn to her and number close right away. If you don't know it my 95% number close is pretty strong. I think I've posted it here somewhere, otherwise just google my name or 95% number close.