Congratulations on finishing the courses! 
I’m going to second what Bry said. I’d also add an extra step – rather than focusing on a wide range of ingredients, start by looking at your local plants to create an apothecary. There’s likely a lot you have available to you that you don’t realize simply because the knowledge of local flora and fauna has been lost to many people.
It might also help to study and practice energy work. There’s a spell I did many years ago that I still use as the foundation for any of my healing work. I won’t recount the entire thing here (you can read it here), but the knowledge of human anatomy and physiology you likely have can be an immense help in healing work, both for yourself and others.
How exciting that you’ve found the path you want to take! 