This page contains extra info from page 1.
If you single pixels with the pencil tool, the resolution will get even better.
You can use Eyedropper tool and push the [Alt] key to select the desired color.
This tip works even when changing step2 to 25% or 50%. See below.
[25%: Bicubic Sharper > 50%: Nearest Neighbor]
See the apparent increased number of dots.
[50%: Bicubic Sharper > 50%: Nearest Neighbor]
It doesn’t seem to be pixel art, but it is quite sharp.