What are some good flirting tips?

Well it's better to be straight forward with guys, so you don't have to wait for his reaction for so long. Flirting wise, compliment him more on his looks, try to tease him in a good way, just don't be all over him and give him the "Oh this girl must be easy" idea. Joking with him is good, talking about things that are happening in your life would be even better.

Just remember the fine line between guys viewing you as a friend, a one night stand, or girlfriend material.

Laughing a lot, smiling showing your teeth, gentle touching his arm, play fighting stuff like that o make it clear you like his company etc.