good eye contact is the most important thing. your in a conversation with you and your boys and she is in the convo too. so she starts talking all your attention should be on her and her only. look her in her eyes while shes talking.but when someone else starts talking ur attention should still be on her glance for about 3 seconds smile and turn back to the person who is talking. but not a wide open eye look, a regular one. but be yourself and be honest we like that. Be a good listener let her say her point then u make yours dont interrupt. Dont make the convo be all about youself ask her some questions. so for example she tells u yea i dance ballet or i like volunteering. later on ask her u know what lets go to a play and see the Ballet nutcracker and she would be like how u know i like ballet cause most of the time girls forget what they tell guys. and then u can say well i remember u told me u took classes in ballet and how u were so fond of it. she would be very impressed. thats a real turn-on guys that listen.

don't be somebody you're not and flirt wit her but don't make it obvious unless she likes u back

be yourself and keep on trying but do not get obessed