As a former IT Lecturer who presented, amongst others, Advance Excel to post school varsity students, I have only received 5 star ratings from my Excel employers on Freelancer.com. You are welcome to visit my extensive Freelancer Profile here:
https://www.freelancer.com/u/Snap2Art.html
I have set the milestone payment to 100%, which will only be payable on completion of this project to your satisfaction.
Hope to be of service to you soon.