I put a wave on mine , not sure if I still have pics or not , let me look.
Ok , I do not but I can explain the process.
The most effecient way would be to use a Dremel tool and cut off disk , this is how it worked for me.
example of dremel and cut off disk
Take a thin tip magic marker and mark off the area you want cut , try to imagine how it will look once it is cut and make your marks.
Clamp blade in a vise , you can wrap the jaws of the vise with duct tape or something for padding , make sure blade is nice and sturdy in there.
I took a paper towel like Bounty and soaked in cold water , wrapped around blade area so as not to transfer heat.
Do your cuts , try and be as precise as you can , your almost done !
Clean up the cut if need be with a small file and some sand paper and your done.
A good method would be to look at some wave pics and imagine your knife looking the same.