There are a few reasons why you might not be getting the results you want.
First of all, and sorry for asking this, is your stone perfectly flat? By this I mean, have you lapped it until there is no light showing between the honing surface and a straight edge. If you have have just drawn hatching and lapped that off, then it probably isn't flat. If you don't have a straight edge then use the hatching trick 3-4 times to be half sure. Please don't take offence to this question - just need to baseline materials before continuing.
Secondly, how are you using the hone? There are a number of videos out there that say "x number of strokes and you are done." That never works for me. I recommend this video:
He uses a Naniwa 12k but the grit rating is similar to the Shapton 16k grit rating so his method applies
Thirdly you might have some micro chipping. The video above deals with that. You need a cheap loupe to be sure. £4 from Ebay. I use something like this:
https://www.ebay.co.uk/itm/30X-60X-...536330&hash=item2ad2745183:g:BxMAAOSwN9NdU3OH
Fourthly, the Shapton 16k produces a shave-ready edge, but it is pedestrian. If you are used to something a bit more lively you might want to follow with paste. Three options here:
1) Good quality CrOx, followed by good Quality FerOx. The Windrose stuff is pretty good from shaver's delight:
https://www.ebay.co.uk/itm/Chromium...900075?hash=item3d1fd2976b:g:yCwAAOSwru1eEm8M
2) The Solingen crayons:
N.B. the Solingen red crayon is not FerOx but courser. So you either refine CrOx-->FerOx, or Solingen Red-->Black. If you don't have a spare strop to use for the pastes, newspaper spread flat on the side of a counter top is a great stropping medium with the paste very lightly applied to the paper.
3) Diamond Pastes: You will want 0.5 micron, 0.25, and if you really want to push it, 0.1 micron.
Obviously don't pollute your main strop with paste.
Don't bread knife the blade unless you want to start from scratch with a new bevel set. The only reason you might want to do that is is if you have an almighty chip in the edge. But that would be clearly obvious without a loupe.