Too laboured a pun? Sorry.
Anyway, once the blade has the bevels done, it’s a relatively straightforward matter to pencil in some flats, cut them off, and then round over with a fine rasp.
Once the rounding is done and the shape is what you want, start sanding at 80 grit and progress through 400, again whiskering between grits. The difference from last time is that at any given grit, we’re starting with the flat parts and then sanding the curved areas. This will help to blend everything together into an organic form. In cross-section, it would be a flattened ovoid, rather than rectangular with round corners. It’s a minor difference, but one that is noticeable in the hand.
Dust with a mineral spirits dampened rag, and goop on the finish. All done, and you now have a functional tool that is also quite fetching.