First new steps you need Apps you need the apps for mockups, manufacturers, and marketing Apps Photoroom(background removal) Alibaba (manufacturer ) Procreate (mockups) Shopify(website) Adobe's illustrator(mockup/logos) Pinterest(ideas) These apps will be best starter for the clothing brand new industry people but you with these apps you cannot copy right anybody else things and Alibaba you will have to clear our instructions very well because its no hand holds. Good luck and start out new!!