Yes, Two of the most important things of Enameling an artist needs to learn is:
1-Understand your available fluxes.
2-Test all your enamels.
I was young once, ha and still am at heart, and remember how anxious I was to make something beautiful. I also did not want to take the time to really understand what enamels were. So instead I jumped in and made plenty of messes.
There was only one book I could find and no classes or instructors in my area.
But today there are many books and many classes. Do yourself a favor and cut many years off you bad side of the journey. Study first.
Start here https://alohilanidesigns.com/vitreous-enamel-flux-comparison/ and read my site. I have shared here for 12 years.
And if you would enjoy a one on one class join me or contact me and I am happy to help you find a great instructor in your area.