LinkedIn is one of the best places to find your prospects. However, to sell on LinkedIn, you got to try the following:

Create a perfect profile that demonstrates your/your company's accomplishments. Add a photo, headline, summary, relevant videos, presentations, and recommendations from your customers. Mention why you are different from the crowd. 

Find the right people - decision makers - using various search options.

Get sufficient information about your prospects’ business.

Reach your decision makers using LinkedIn’s InMail or get introductions through mutual connections.