Usage is very much up to you but here are some examples:
I printed this on a Creality Ender 3 with a .4mm nozzle, 0.16 layer height and 60% 3D honeycomb infill. The infill may have been overkill but don’t blame me if your bracket falls.
I’m not an engineer but I guess that extra beam thingy is called a truss and I hope it keeps the part from drooping and breaking.
My somewhat heavy plant has been on there for a few weeks now and everything seems fine but your mileage may vary.
The screw used to make the hole for mounting can be found on Mc Master Carr under 94997A450_Phillips Rounded Head Screws.
The author marked this model as their own original creation.