I've made a living with my art for a little over 20 years. Mostly as a professional tattoo artist. Sacramento, Hollywood, Las Vegas, and other shit holes. I have also done a lot of freelance work, like album, and book covers. Business logo's. you get the idea. It's hard as fuck making a living off of ones creativity and art work. Nobody will ever appreciate your work like you do. you can spend days working on a piece. when you show it to someone they will look at it for 30 seconds tops, then move on. asking someone who isn't an artist what they think about your work is setting yourself up for frustration. they can tell you if they like or dislike the piece, but they are not qualified to tell you what, if anything is wrong with it. your work looks really good. hopefully you will be one of the few artists to make a living at it. If not, you still owe it to yourself to continue to create art.