The best and easiest way is to do it using the mousepad method. But you can do it using waterstone too just like how the japanese polish their swords & knives. But it takes years of practices to get it done right. also, you have to have a selection of stones from low to high grids. with skills, you can do wonder with stones. but for me, It's just a pain.
Again, easiest way is to re-profile your edge using mousepad method. This method is much more forgiving to your blade if you screwed up. start using 400grit then 600 then increase up 1000,1200 or even 2000. Then strop it black/green compound on leather strop. to maintain the razorsharp edge, you just strop it with the leather strop. heck, it can even remove unwanted patina or rust for you.
just my opinion....