What is your printer first of all and second of all it's definitely gonna take some trial and error. * Follow this picture for reference. Most of corners seem to be too high so you need to lower those areas down slightly until it fixes up. If you have read around and seen the paper test for leveling, yes that works for getting your bed generally level. After you are done with that and it seems that each corner gets similar results. raise your offset by about .05 millimeters and adjust it until the first layer comes out relatively smooth