Having a website designed can be a very interesting process. You should not just dive straight in without thinking long and hard about the look and feel you want to portray as well as the functionality that you need on the site.
All to often companies create a website based on what they like and think should be on there without actually carry out any research and finding out what their customers want. Ideally if you have a large customer database, you would want to send out a quick survey asking them if there is anything they would find useful or benefit from having on your website. This will give you a great head start when it comes to customer satisfaction.
Always ensure that your site is 100% working correctly, as a site that is only half complete or contains errors on it can lead customers to lose trust in what you are offering and therefore look elsewhere.