With any business having good communication before during and after is a key role in not only maintaining your client base but also ensuring the quality of your work. 

When you communicate with your customers on a regular basis you will always receive good and bad feedback, at the end of the day you will learn the best way to handle each and every situation. You can then adjust, learn and grow with each customer, this builds a healthy relationship with them and helps pass along to future customers that not only do you communicate well but you welcome any and all feedback they give.

All in all, providing good customer service can be the defining factor in how well your business with do.