I am too new to this to write the instructions alone, but if people can crowdsource info on ai platforms and any tips/tricks, I'd be happy to format them into instructions.
So far I've only used openart.ai. I keep getting an error message about needing to sign up if I want to use NSFW lyrics, but I can't always figure out which lyrics it's got a problem with.
It also tends to generate images of just a person that has little to do with the song. I've tried playing around with the Prompt Adherence scale with minimal success.