so i have this jean jacket i wanna spice up with some DIY patches, but the problem is that i've never done this type of thing before and i don't know what fabrics would be good for that. i have this old pair of sweatpants that's falling apart and some old t-shirts that i could cut up, but both of these fabrics are kinda stretchy and i don't know if that would work. is there anyone more experienced with DIY here that could give me some advice? i'd really appreciate it :)