Before sending message about inquiry,  you need to already have the broad idea of the product you'd like to make. If you don't have the clear idea yet,  we suggest for you to find inspiration from internet (Such as Pinterest, Instagram, etc). Your idea can be : Mood board, your brand identity + target market, picture from internet with modification base on your liking, tech pack if you already have one, or an actual piece of clothing that you already have and you want to modify.