The most important thing about making comics, is finishing what you start. No one will get anything out of a half-finished story, least of all you!
Be aware that when you are working on a project, it can be very tempting to bail when problems arise. You get stuck on some aspect of the story or things that are hard to draw. That other story you have brewing somewhere in the back of your mind suddenly seems way more attractive. You feel like that’s the one you should really be working on.
But with every new story, comes new problems! You just don’t see them now, because you are not deep in the story yet. It is simply the dream of what it could be, so much better than what you are currently working on.
And of course you can work on any story you feel like. I would just advice that you finish them eventually. One by one.
Another thing that happens as you’re working, is that you learn. You grow. You look at the work you’ve already done, and you think you could do better. If you go back and change that particular scene or redraw that particular panel.
My advice? DON’T!
You’ll end up re-drawing the same three pages over and over again.
Finish the story. Then go back. If it still needs some work. 9 times out of ten, what seemed hopeless and bad during the process, will seem irrelevant and pretty OK after you have finished the story.
The most important thing to gain by finishing a project, is the confidence you build. Making comics is a lenghty and often gruelling process. It’s easy to feel like it’s all for nothing. You start beating yourself up. You feel you are not good enough, that nobody cares.
Having something finished changes that. Now you can show it to others, get feedback, respect. You have achieved! You are a success!
Abandoning a project half way through has the opposite effect; You feel like a failure. Do you think feeling like a failure helps your productivity?
The short answer is NO.
You learn more from one finished comic, even a three page one, than from ten projects that are halfway done.
Get to the finish line. Even if you have to stagger or crawl to get there.