Requesting Info On Creating My Own Chipsets

Hi there. I've been messing around with RPG Maker and absolutely love it, but I'm getting bored with the same old chipsets that you find around the net. I'd love to learn how to make my own from various video games, but I'm not sure how to begin. Would someone mind either giving me a link if you know of a good page with instructions, or giving me your own instructions? I appreciate it!

Thanks so much,
Tracy