A lot of people have asked me about how they go about creating and selling their own comics. There are many different ways to do that, but most people I talk to want to see their books for sale in comic shops alongside mainstream superhero/big publisher titles.
I put together a pretty extensive blogpost
outlining the financial realities of how mainstream comic distribution works and the profit margins involved for independent creators. If you want an eye-opening look at the business, please give it a read