You want to take any opportunity you can to show your expertise. One way to do that is through leaving the buyer a review. When the buyer reviews you, you then have the chance to leave them a rating and some comments.
You can use those comments to highlight the service you provided and the topic you covered, together with any other relevant points. These buyer reviews show up in your gigs so if a prospective buyer is browsing gigs, they scroll down to reviews and see you’ve covered a similar topic, it increases the chance they will buy from you.
Here are a couple of examples of the type of buyer reviews I post.
“Thank you! It was fascinating to work on your content about AI and robotics, and how it impacts on the financial industry, especially from a cybersecurity perspective.”
“Thanks!. It was a pleasure working on your healthcare and software content for businesses with employee caregivers. It’s a subject that definitely needs more insight and understanding, and I hope this article goes some way towards accomplishing that.”
Keep it short and focus the reveiw on the type and topic of the work you completed.