First of all, you must identify the keywords which explain your business for instance fly, offer, evaluate, increase and educate.
Then, you have to identify the keywords which describe the problem area which your business address or the gaps which it targets to fill up, for instance, health care, cancer, AIDS or technology.
Now, you have to find out the phrases which best describe your business and makes it distinct from other businesses. For instance, you can use the phrases like user friendly, award winning or low cost.
After that, you must start working to combine the different keywords which you have identified for your business, along with the phrases to make a sentence. You can use only one sentence as your business statement or you can use two or three sentences. However, it is advisable to keep your statement concise as well as comprehensive.
You can use your business statement to form your vision and mission statement. Vision statement is the statement which addresses that where the business will stand in the future. Whereas, the mission statement tells how the business is going to operate in the overall business environment and how it is going to achieve its goals and objectives.