> But watching some pros go at it on paper + pen, I do get this feeling that when you don't have the undo button you really do gotta force yourself to get good at the nitty gritty. Really you need to get good at drawing lines nicely the first time when you're inking to paper.
Totally! A lot of artists recommend to young folks that before they dive into Procreate / Illustrator - still get good at pen and paper and ink by hand. The lack of undo button forces you to make choices and commit to them. You also hear a lot of artists talking about how, past a certain point of creating a piece, you are now "solving problems" to finish it.
I highly recommend the Draftsmen podcast as a wonderful resource to learn. Marshall Vandruff is a master teacher and has many thoughtful things to say.