Hi there Fractals, and welcome to Tapastic! Your comic looks interesting i like how you draw faces!
To answer your questions~
1) Yes, it's a little difficult to go back to it, I sometimes can't even look at my first chapter of Cosmic Fish without cringing but that just means there's been improvement. For now, try your best and you'll start noticing your brain clicking and coming up with solutions faster and better, it's all in the practice! If you're noticing things you didn't before, you're on the right track!!
2) Switching from traditional to digital is a little difficult but more than do-able! Mastering traditional helps you learn the tricks and stabilizes your hand too. Depends on the tools you use but it's pretty easy to click and you can expand by adding to your work those extra touches digital can do.
For now, my advice (although I'm still pretty new myself) is that you should appreciate your readers, but also focus on yourself. Tell a story YOU'D want to read and the readers will show up. Best of luck and welcome!