You know the leftover box. A short track in the middle, counter still dark. Run the rail over the work, then aim the heads.
Under Cabinet Lighting: Light the Counter, Not the Tile
You know the board. Ceiling can on, you lean in, and the knife disappears. That is your own shadow. Put the light under the cabinet, toward the front.
Kitchen Island Lighting: Height, Spacing, and Task Light
You know the island. Pretty pendants, a dark cutting board, shoulders in the way. Hang the lights so you can cook, then light the other counters separately.