Go https://teechip.com/ and make a seller account and design phone cases for sale I basically downloaded anime wallpaper from google and designed each case
you could use supreme or anything except louis vuitton patterns because of Copyright issues
take advantage of the tik tok free ads up to $2000
https://www.tiktok.com/business/en/
and advertise your tee chip shop
then
make free ads with the google ads credits up to $150
focus on youtube ads and discovery ads you could watch a youtube video on how you make effective ads depending on your product
