I, too, am new to Etsy, having opened my shop in August. Although I have a lot of competition and haven't sold anything yet, myself, I have high hopes that it is only a matter of time before I do and refuse to give up. I received affirmation of my hopes yesterday, when one of my recently listed crocheted afghans was featured in a Treasury listing (On the Fringe). How cool is that?!
Before I understood what Etsy Teams were all about, I found making friends with other Etsy members and asking questions and advice from them very helpful. I even asked one of my Etsy friends to critique my shop. Following her advice, I revamped my shop, replacing my original profile picture and banner as well as redoing my original listings' photographs (too dark, definitely use natural lighting as suggested). Literally overnight, views of my shop soared.
So, my advice to all newcomers is don't give up, Don't Give Up, DON'T GIVE UP, and as to the question, "How serious are you about your business?", DEAD SERIOUS! If you love what you do and find enjoyment, great satisfaction, and a sense of accomplishment in doing it and do it well, it is well worth your time and effort to pursue what fulfills you and share/sell your talents with/to others.
V