I actually start by doing the entire story traditionally and very sketch like. This gives me time to focus on the story rather then the art. Then when I am done I redo each page on a new paper or digitally. I've only finished one comic ever, but I have been working on my comic for Yuuki for over 3 years and I hope to be finished with the sketches soon xD BTW your comic looks good already, I can't wait to read more.
That's kinda what I do but one at a time. I rough sketch it so everything is positioned how I like it and then I re-do the entire thing. It took me a week to do the first page Thankies, I'm lining page 2 right now c: