Hi,
1. A good profile with refined communication written with your photo
2. Join other LinkedIn groups so that others will know about your presence and visit your page and not just join but constantly engage yourself in that group conversation.
3. Ask Questions on your page and don't worry if you don't get an answer at first.
4. Make efforts to reach out to others by inviting them and again don't worry about their response you keep doing your side effort consistently.
5. Last go for paid promotion
everything is about how much effort you are ready to make to gain more visibility