You may think you already know how to do this, but here's the BEST way. It leaves you with a flat bottom (no matter how thick the ribbon is) and doesn't leave you with a bunch of leftover unusable ribbon scraps after trimming.
Wrapping paper is from City of Industry : https://www.cityofindustryshop.com/
Try topping the packages with a tiny knitted sweater on a hanger! https://youtu.be/Dl2lU5cQ48c