I've been working on my first new sequentials since I took more then a year off to study. I'm quickly realizing that whatever my old process was, it doesn't really apply anymore. I've been doing my best to compartmentalize the steps, but I can't help but feel overwhelmed by all the different concerns - draftsmanship, storytelling, design etc.
It helps to look at the process of other artists. The Work in Process blog is a fantastic resource too study. I only wish you could pause between the different stages or manually cycle through them.