A kind fellow asked me to give a brief walkthrough of my drawing process when making comics, since my Let's Draw videos are a bit fast (1500% faster than realtime, and STILL takes 10 minutes to get through. Yeesh). I told him I'd oblige, but I refuse to be brief.
STEP ONE: I think about what comic I'm about to draw and how I want to present it on the canvas (mostly vertical, mostly horizontal, etc) and create a new document by estimating how big it's going to be (I can add more canvas later if need be).
STEP TWO: I then sketch out the first few panels where I think they should be, taking into consideration how much action and text I need to pack into them and also panel variety (if I can help it I try not to make all the panels the same size to avoid it getting boring and as an added challenge for myself).