Whether you are a professional photographer or an amateur photographer, rating of your sales depends on the needs of the consumers. It does not matter if you have 1000 photographs and can not sell anything.
In terms of selling strategies, selling a product consists of two main functions: 1) tactics and strategy. Sales strategy is the planning of sales activities: methods of reaching clients, competitive differences and resources available. Tactics involves the day-to-day selling: prospecting, sales process, and follow-up.

The tactics of selling are very important but equally vital is the strategy of sales. The advantages are too compelling to ignore.

So, in order to have higher sales in dreamstime you should know the methods of reaching the clients.