Start with one manufacturable product
Pick one original design, define the customer, and upload the file for production review before expanding into a full catalog.
Use quote review as the first gate
Geometry, material fit, finish, quantity, and lead time should be reviewed before a product becomes a public listing.
Turn winners into repeatable listings
Once a product has a stable cost and production route, it can graduate into marketplace proof, Shopify merchandising, or repeat fulfillment.