According to the
autobiography writer company. A 3 sentence bio should start with a simple, descriptive statement about your business. This makes it easy for readers to scan your bio and quickly make the decision of whether they want to learn more or keep going. The 2nd sentence should be the value you bring to clients or customers, and the 3rd sentence should be what is unique about you as an individual.
For more info visit the site:
https://www.bookwritingfounders.co.uk/auto-biography/