One of the things that can hold you back in making your own indie games is the art. If you want to get some decent starter packs of 8-bit art that’s free then here’s a decent resource I found:
They also sell other packs, but these will be good enough to get started. The only problem I’ve had is how exactly you pull these into PICO-8 or other consoles. I’ll have to research that and get back to you.