"Making money is art and working is art and good business is the best art." Andy Warhol
Crafting a well written statement of work is an art form that requires careful consideration of the language used to describe the work to be performed. It is a balance of salesmanship and delivery execution. Go too over the top on vague and open for interpretation statements and you create problems for delivery teams. Make it too tight and you will not get the deal signed.
Here is a helpful list of words and statements to avoid and some useful suggestions to try instead.
This post is part of a number of articles on projects, you can read more here.
You may also find some of the tools and templates that I have used to deliver projects for startups here, including the most popular item in the store, a project quote tool that helps you build a fully costed project commercial model. You can find it here