In cartooning, I imagine that you sketch in pencil, finalize in ink, scan into a computer and color.

That’s more-or-less correct. Here’s a slightly more detailed version: I sketch on computer or on paper (depending on my mood). Then I scan the sketch into the computer (if necessary), use the computer to draw panel borders and lettering, print out on paper (with the sketch in a light blue color), do finished drawings in black in on the light blue print-out, scan in the inked drawing, correct any inking mistakes on the computer, and color.

And that “correct inking mistakes” is of course the bit you were wondering about. I just make corrections directly on the scanned-in page onscreen. So although most of the black lines are a scan of what I drew in ink, small bits of the black lines were drawn or modificed on computer. In the case of the wrist, I used the computer to rotate his fist to a different angle, moved it to a slightly different position, and then erased and redrew a couple of lines indicating his wrist to better match the new position of the fist. After that, of course, I had to redo the colors in that small area of the page.

Hope that makes sense! (But feel free to ask questions if you still have any!)

In cartooning, I imagine that you sketch in pencil, finalize in ink, scan into a computer and color. So I haven’t been phased when you changed colors, cuz I understood that to be computerized anyway. But to re-draw, you’d have to undue the ink phase. Do you actually white-out a spot on the drawing, or do you skip the ink phase and simply scan the pencil drawing? And after you re-scan, do you have to colorize the entire page anew? Or am I simply mistaken about the whole process?