Sevenhi, I degreased with acetone, then wiped on the blue with a patch. Once I had an even coat, rinsed with water and wiped it down with some gun oil, which darkens it some. Then use a gray Scotchbrite or oooo steel wool, maroon works but it's more aggressive, and remove bluing until you like it. If you leave some around non-wear areas it looks nice. If you take too much, just degrease and add more. As you handle it the bluing will wear, it isn't real robust.
This is the first Late Ketland I've used - it is FAST!