Recently friend of mine shared with me how he makes sales. 

Here is his algorithm:

1. Introduce to your potential customer ( linkedin, facebook )
2. Send useful advices
3. Send 3 useful advices according to your topic of activity
4. Call to him. It shouldn't be call for sales. Just clarify what questions he has or which tasks he tries to solve
5. Send sample of project
6. Send useful advises
7. Propose for him diagnostics and solution of most prioritized task
8. Invite him on master class or webinar
9. Sned him link on article in your blog
10. Tell him about your services
11. Send him useful advices
12. Send him sample of project or feedback from customer