As a professional writer, talk about your writing journey, provide tips for success and post jobs for current projects.
Or, build a writing community or forum online and help professional writers improve their craft.
Share the writing process and insights from professional writers.
As freelance content writing is in high demand, you can promote the tools and resources that professional writers use – e.g. writing/grammar software, research databases and productivity tips.
Suggested blog name: ProWriters.org