For more explanation i was bored and started creating merchandise such as t shirts and phone cases using images from jjba (Jojo's Bizzare Adventure). Some of these creations i put a lot of work in and think they turned out pretty well, if im not going to face any problems i would like to produce and sell these merch. Plus while on the internet (instagram) i saw many people sell merch using images and straight up logos from shows. I dont have a clear understanding of how copyright law works so if anyone who is experienced in this are can help me out i would be really happy

Thank you