This is so true. I've been using Inkscape for years and it took me a long time to get used to the keystrokes and tools it provides. I recently gave a git talk a

This is so true. I've been using Inkscape for years and it took me a long time to get used to the keystrokes and tools it provides. I recently gave a git talk at work and ended up drawing many, many diagrams for it using Inkscape. Even though I was well-versed in the tool, it still took a long time. So, it's a combination of dedication in time to practice but also dedication in time to create the illustrations. On top of that, there's the learning of aesthetics along the way: what colors to use, what proportions to use, how much margin to set for better-looking illustrations, and so on. This takes serious practice.