Not sure what you're seeing, but I see quite a few overlapping lines. One of them easily solvable if you move `addresses` down. It starts with the `orders->users` overlapping `orders->addresses`.

Also, the `reviews` table overlaps the line from `order_items` to `products` and moving `order_items` down for example gets rid of that problem.

Not saying the project isn't cool, but this layout isn't optimal as per your constraints.

Ah, I was imprecise in my comment. I didn't mean that this implementation was doing the optimal ordering - I was just reminiscing about a similar project I worked on an why I abandoned it (I was unable to get the ordering done while keeping performance good enough with thousands of tiles