This is a fast test of your bed leveling on Monoprice Select Mini/Malyan 200/PrimaCreator P120.

I don't use the full size of the bed.
Two reasons:

1. Most of the time you rarely utilize the outer limits of your 120mm bed
2. It is better if the print goes faster so that you can adjust your bed instead of waiting...

The square is 88 mm and 1 mm thick, you can print at any layerheight you wish (for me 0.2 is the sweetspot, you can see where a corner is too loose or to tight even if you normally print at a lower height)

The circle in the middle are meant to test layer adhesion more effectively than a simple cross section.

Printing with or without infill doesn't matter but do not use rafts, that defeats the whole purpose of testing how leveled you print bed is.