Exuding self-confidence can be a big turn-on.

There are people whom our opinion of being beautiful is influenced by having a great attitude and charming demeanor. Likewise otherwise physically beautiful people cn appear ugly when they display unlikeable traits.

You are naturally beautiful, play upon that by exuding those positive things about your persoality - and try to be outgoing.

In the meantime - stay true to yourself. Don't fall into the trap of tryig to be the individual you think others want you to be including when your feel that overwhelming need to belong and find yourself in the position of sexual activity.

You have mentioned awkwardness. There is a great way to get around that - observation. Watch those around you. Especially watch the non-verbal communication that exists between others around you.