I wrote it with the most common type of digital art I've seen, a typical workflow sketch, line art, flats, shading/lighting, post processing.
"I wish my art was better" is such a broad thing. Better at art means so many things. Is it designing more cohesive characters, is it rendering better or is it having more solid draftsmanship (drawing) is it being able to panel a comic strongly?
To people that don't spend this much time thinking about art, good art is often tied to how you render. Because a good handle of rendering means a thorough understanding of light, values, composition and such topics. This ranges from stickers all the way to full poster illustrations with multiple characters. Ultimately it's confidence and intent that will rise up.
Realistically you don't have to follow any of these flows. Lineart and even sketches are just one way of doing things, it's just a straight forward way to represent this stuff. The thing to remember is lines don't exist in reality, if you don't like doing lineart, then just don't do it. Still like the look? Work with vector layers. You can learn to make it look exactly how you want, you just need to bend the tools to your needs.
This is the difference between someone asking you for something specific and going "ok I haven't drawn that in that way before" and knowing it will work versus guessing and hoping it turns out ok.
If your goal is to make sales, marketing is an entirely different beast.
If your goal is to make pictures that gets lots of likes, that's also something else.
