A professional attitude is crucial to successful self-publishing.
What if I wanted to sell you a dress and I said something like this?
“I grew the cotton myself, spun the yarn and wove it. So, it’s going to have a rough feel to the cloth. Sorry about that but I don’t really know what I’m doing. I designed the dress myself, too, so, you know, it won’t QUITE be up to the standards of Paris or anything. But you’ll love the dress. I really poured my heart into it and it represents who I really am. It may not fit and may not exactly be the right color for you. It’s kinda expensive, too. BUT you’ll love it! Really, you will!!!!!!!”
Unprofessional. That’s all you can say. And yet, I hear a version of that about children’s picture books all the time.