First off, I'm glad you asked yourself this question. Growth comes from challenging yourself. Second, I'm going to probably sound like a biotch to most people but I'm only trying to help and I'm going to try and be as constructive as possible. Third, I am new to etsy but I have studied art in college for 8 yrs, so I think I know a thing or two.
Art is subjective and to produce it, as with all other mediums requires a premeditated target audience. You are very knew to painting/drawing and it shows, at least to me. Not everyone looking to buy something has years of art experience but as consumers most of us are accustomed to seeing work that is more advanced. Where does this leave you? Well play up what you have to work with. This will limit creativity but you are still learning your craft so it's only natural. I think the fact that your work is colorful, playful and has a childlike quality indicates that you could produce it for children's room decor, or something along that line. With that said you should do some research to maybe check out themes, see whats trendy, and practice. Buy cheap paint for practice, then splurge on the better stuff. Go to the library and checkout some books on art. Draw everyday, this will improve your line quality, help you understand balance, positive/negative space, perspective, all that good stuff and that translates into your paintings.
Remember that this requires practice. Not everyball a baseball player hits is a homerun, same thing with art. Not every painting or drawing is a keeper, nor should it be. I don't care how many hours you spent on it. There are times when I made more then 100 drawings to get to that one right one. Unfortunately, there is a steap learning curve when it comes to art.
I know you are a mom and your time is limited but if you took just on course at a community college at a time, this could help alot.
Also ask yourself where do I want to be and what ultimately do I want to create. There are many roads to one destination, but first you have to know where you want to go.
As for jewelry, I only have experience making sterling silver pieces so I will leave the advice for someone with more experience.
