If you would like to add a member review that will show on their profile and also as a star rating, then you most certainly can.
First, go to the member page and choose the member you wish to review ( https://timhillphotos.co.uk/members/ )
Add a review:
Edit a review:
I very much encourage members to leave reviews but please remember the review is public and will show on the members profile for all to see.