Maybe just look here instead 

A couple simple test shapes I made to calibrate my printer.
Test Octagon: Useful for testing flow ratio in vase mode, or testing steps/mm in regular mode. The rounded corners prevent bad pressure advance from affecting the result.

Test Shape: For calibrating steps/mm. Remember what side the seem was on.

Skipping Test: To test the maximum acceleration possible before layer shifts (kind of a dumb test, I've never really used it, but I might as well share).

A couple tests I like as well:
Bridging Test from this vid: 

Clearance Test: https://www.printables.com/model/411360-clearance-gauge
CaliRings: https://www.printables.com/model/474723-calibration-rings-calirings
Skew Test: https://www.thingiverse.com/thing:2972743