It is critical to create awareness of your presence at the event prior to being there. If you use social media platforms, attendees connected to the event will start noticing your posts on the SM platforms. At the event it is important to speak with whoever walks by and make eye contact with them. I always recommend to simply network with the attendees and avoid "selling" them your services. Creating relationships is crucial. If you go to different events, your industry colleagues will start noticing your presence at various events. Create "breathing rooms" for the people you are networking with. It is all about building relationships. Good luck!