When I was 9 y/o, I cut up an old blue bed sheet, measured my little sister’s waist, and sewed together a raggedy skirt replete with an elastic band. Turns out it didn’t fit worth a damn, so I quickly devolved back into my comfort zone and started mass production of whittled wooden spears and swords.
Since that cotton abomination, I've developed a bit.
I have experienced a product from whiteboards and CAD to negotiating pricing with 3PLs.
Currently searching to experience high volume production.