Personally I, 95% of the time, never start with cards. My reason is because cards, while common, are not something people carry around regularly. Usually I will start by introducing myself not as a magician but as a normal person then once I am actively having a conversation with people I'll try to steer the conversation to my opener which is usually "Crazy man's handcuffs" followed by Marcus Eddie's "Stairway". I'll let them react then go with the flow from there and do like one or two more things but I always leave them wanting more. I try to use magic to express who I am, not let it define me.
I know the OP was just looking to get some tricks out of his question but more tricks is the last thing you want if you want to be a halfway decent entertainer.