Help with ender 3 and laser

I want to use lightburn, but have terrible results so far.
I have an ender 3 with a laser mounted, running PWM with the fan M106 and M107.
My images are poor quality and inverted. If I do filled text, it just prints a glob. I set the machine as Marlin. I export to Gcode, and the send that to the printer.
But is Marlin correct?
The black is white and the white is black. I tried selecting invert in both the image, and in show, but no difference.
To comment, I think this is the platform I need to use, but need to figger out what I am doing wrong.

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