The key to a successful piece of writing is the planning. It helps you to select vocabulary and order your paragraphs. You should also plan in time at the end to proofread your work.
A flow chart is like a mind map that offers you a visual way to plan. A flow chart allows you to order your ideas and paragraphs into an effective structure, allowing you to consider the topic and content of each paragraph as you plan.
Some writers find a flow chart helps them make sure they consider each important stage of the writing process.