Hey, Walzd!
It's great to meet you, and I'm really glad you're interested in improving your fly fishing skills. I think the first step is to set a goal for yourself. What do you want to achieve? What do you want to accomplish? And then make sure that those things are clear in your mind--they should be goals that are at least partially measurable, so that you can actually see if they're happening or not.
Once you've got some goals, it's time to get started. The first thing I would recommend is going out and practicing as much as possible with dry flies, streamers, and nymphs. Try different things with each type: maybe try new colors or sizes of nymphs; try tying different types of streamers; experiment with different lengths and weights of dry flies; etc. If possible, try using different gear (i.e., a different rod or reel) when practicing each technique--it'll help build up muscle memory for each one so that when it comes time for real fishing trips later on down the line (or even just while sitting around watching Netflix), everything will feel natural instead of awkward because now there's muscle memory built up in your brain about how
If you're looking for some specific tips on how to improve your nymph fishing, I'd suggest trying different flies and techniques until you find ones that work for you. There are so many options out there, but I would also recommend checking out some online guides like
Trizily.com- Fishing Resources.