This first video shows me flattening the scraper on my DMT fine stone.
This video shows how I then get the cutting edge flat, with a 90° block to guide me.
On this next section of video I using an oiled burnisher to prepare the edge for rolling over, my grandfather would use the back of his chisel for this operation, not a good one I hasten to add.
Then I roll the edge, I need to say here that you do not need a lot of force for this, and I just flick the burnisher over once or twice.
Give it a whirl, and nice shavings not crumbs or dust.
Sorry about the quality of the video but you get the gist, I hope it's of some interest, and thanks for looking.