To sell a single item in the junkyard you must provide a picture of the actual item.
To sell a run of items, you must provide (at least) a semi-professional looking drawing of what you will be producing with a description of intent. Or better still a photo of a fabricated prototype.
To sell a run of items, you must provide (at least) a semi-professional looking drawing of what you will be producing with a description of intent. Or better still a photo of a fabricated prototype.