Writing is always about bringing clarity to the subject. The more historical research, the greater the clarity a writer can provide. Don't think research should only enable you to dazzle with facts. It should give you the deepest possible understanding of your subject. Historians have an obligation to the written record, not to themselves.
So here's my advice:
Be curious. Even if you think you know about something.
Be brave. You're entering uncharted territory.
Be resolute. Never settle for less than the truth.
Be patient. It will all come: your title, content, organization.
History is often about what people did in desperation, in delusion, in error, in malice, in total misunderstanding, in the shallow desire to impress someone, in grievous need. To write history requires writing the truth as perfectly as you can because you are creating a permanent record. The writer who begins the task is not the same one who completes it.