You are making great progress and are off to a great start.
I disagree that learning is the easy part though. Personally, I find learning physically hurts my brain. That's why we often resist it! lol Plus, the learning never stops. There are so many nuances to this art form that we pick up as we gain experience over time. For instance, once you get the slant perfect, then there is the oval, consistency of loops, letter spacing, crisp squaring of tops and bottoms.... As you get comfy with the basics, then you realize that it's not just about even pressure with each shade, but start focusing on when you add and relieve the shade, ensuring application of pressure occurs at the same position within the x-height for every stroke and not during the turns....etc. These are nuances that experience and practice through drills teach you that are often not relayed well through instruction. In addition to drills, make sure 50% of your calligraphy time is studying. Even when you think you know a form, study it some more.