If you breed them they will come..... Seriously though there are ALOT of people who are or have done this so it can be very competitive. It all depends on what scale you plan on doing this at and how dedicated your going to be. Like anything else building a brand is what will make or break you. Do you want to go retail, wholesale, or both? You can start by coming up with a catchy name, get a business license and go from there. With our societies addiction to social media you can obtain a decent number of customers with only spending a few minutes a day on the different sites (Facebook, Instagram, R2R, RC). You give the consumer either a unique product, or a quality product at a reasonable price point along with providing good customer service you have a shot at making a little money. Good luck if you decide to go for it!