Tip: If you give a Muncher tile custom graphics, it will still act like a coin when a silver P-switch is active, whether it looks like a coin or not. So make sure to use ExAnimation if there's a silver P-switch in the area.
Feel free to PM me! I'm quite friendly, pretty shy, and I love talking to people. If it's a question about SMW hacking, I'll do my best to help out, although I don't really know any ASM, or how to port music so you're better off asking people on the forums for that. I hope to one day get into music porting lol.
I've started and abandoned several hacks, although don't worry, I got like one level into them and they weren't very good anyway.