Milestones 2018 is the subsection for sketchbook fillers from 2018. It mostly contains Patreon milestone images crossposted in the sketchbook section (some of which were old milestones previously posted only on Patreon) and also colored EGS:NP comics, mostly from the storyline Nanase Craft ATCoZ.
It is 48 pages long, starting with EGS Sketchbook Comic for 2018-01-01 and ending with EGS Sketchbook Comic for 2018-12-27.