Arkane Linux is an opinionated, immutable, atomic Arch-based distibution which aims to provide a GNOME-centered experienced with minimal yet full featured and sensible non-intrusive defaults.
Arkane Linux provides ISO images over at the Arkane Linux download page.
Build requirements;
archisoandpacmanare installed
Build the ISO with mkarchiso;
sudo mkarchiso -v -w workdir/ -o out/ .
Once the building process is finished you can find your ISO image inside of the ./out directory.
Refer to the ArchWiki page on Archiso for information. Or follow the introductionary videos and articles by Erik Dubois on the Carli project, if you are GNU/Linux savvy the Carli-1 series of videos should provide you with all the information you need to get started.