Creating a unique description is a great way to improve the quality of your listing. With its unique content, then your listing will be quickly indexed and have a good ranking in the SERP and will indirectly increase your website ranking as well.
There are several examples of business listings that deserve as a guide, here are a few of them:
Do not repeat keywords too much, tell the reader about your website clearly, make as natural as possible. And if you have an account on Twitter, Facebook or Google+ than please share your listing via our share button.