Possibly because you forgot to add the auto levels. its ctrl+shift+l in case you overlooked it.When I do glowing edges barely anything shows up.. there are little white wisps but unless I adjust the edge width it's mostly black .____. Did I do something wrong? XD
As of now, no :unsure: I do have a result pic...Do you (or anyone) have a screenshot of this?
And also, you can change the colour to red as well. It looks pretty darn good.