Artisans create new levels with the level editor, scheming on the forum on how to make dastardly scenarios to challenge other Wizards.
See the Artisan class description for more info and to sign up for level-editor-related updates.
Post questions on level design, ideas for new levels, and feedback on the editor itself here.
When a level is ready for playtesting, move it to the Adventurer category.
Include /editor/level/your-level-name URLs to get feedback on your design.