After signing the contract, how to carry out the subsequent communication?

After we completed the first draft of the design, we will, in an e-mail message or QQ directly to customers, and inform the customer to view. Customers after looking at designs, views can be direct feedback to us, we will modify or resize according to the communication, until the customer is satisfied. Send files by e-mail and QQ is the most expeditious, and communication through telephone exchanges are more able to reflect and stay productive.