Here are a few images from Volume 1. Not all of the art for the volume is complete yet, and more may be added as time goes on.
Claire, soon after she first arrives in Llystletein.
Spoiler
[collapse]
Claire, as of chapter 62
Also features Sylvia and Geoff.
Spoiler
[collapse]
Both of these pieces are by SHIUWO (@Shiuw0 on Twitter)
Volume 2's art gallery can be found here.