Wow! I work a lot with tiny saplings like that, and that looks just like so many of them with all the humps and bumps, EXCEPT you had to chase a ring on that. Which I don't because mine are usually elm or mulberry, etc! That alone took a steady, patient hand. I also get away with bumps using width and allowing some run out of knot stubs, or shaping roller coaster waves along the edges, but yours is so narrow........... and THEN you had to deal with the pith. Beautiful. Amazing.