1. What are you adding?
2. Name
Spaces become underscores. Capital letters matter: the sprite file gets exactly this name.
3. Sprite sheet
A PNG image of the whole sprite sheet (frames of 64 x 64 pixels; pure magenta #FF00FF is
transparent). An existing .txt sprite file works too.
4. Settings
Choose a sprite sheet and the settings are filled in from its size. Check them in the preview.
5. Check and preview
Preview only - this copy of the Outfitter shows your item, nobody else sees it. Change settings above and press "Show preview" again to update it.
6. Save it to the project
Fix the problems in step 5 first.
a) Download the sprite files
b) Copy this block
c) Add both to the project and publish
On the GitHub website (nothing to install)
On your computer (GitHub Desktop / Git)
Check the collection
Checks the lists and the items in js/outfitter-new-assets.js as this copy of the site
has them. After publishing, run it on the live site to make sure everything arrived.