1. Choose a good opening line.
The opening line is very important in the process of flirting. It's very natural that if you want to flirt with your crush or whomever you are interested in, you have to talk to them. With a good opening line ready, it will help you and make it easier. But the important part here is that the opening line should not be too corny or cliché. Trying an old boring line would just make you look more of a clown. If in case your line is good and they still laugh at you, don't take it seriously and just laugh it off as well. The best opening lines are particularly those where both share common interest. For example, if there is a new movie at the theater, you could just ask “Hey did you watch the Movie X?”. It's all about breaking the ice and starting a conversation.