Don’t let what appears to be a failed engrave get you down 
my post processing involves taking 400grit sandpaper to all my engraves to reveal the true beauty in the wood. Left is before post processing the right is the finished result
so much details behind the scenes that are revealed
There was some pre-processing of the image done as well. I need to get some screen capture software and record how I pre process an image with Gimp 
love Opensource
Alex, are you on Windows, Mac, or linux?
@Richard_Betel Windows for the laptop that controls my laser and Ox cnc. Ubuntu on the desktop computer
On ubuntu, you can use "recordmydesktop --no-sound ". It creates an ogg file. You can then trim/edit the file with pitivi or openshot.
@K1111 this is also technique