When you're keeping a monthly comic book on schedule, there really isn't an opportunity to "redo" pages. On the other hand, if you have serious doubts, there is a window of opportunity to change your mind. Sometimes the window was a little wider than it was at other times:
GUYS -- The second "Too Much Coffee Liqueur Man" page from GUYS. Just poured onto the page. I was happy with the text but it needed a lot better composition. TMCLM and Cerebus sitting and talking in a dark bar by moonlight needed to be "Will Eisner on Steroids". Do I white out the lettering and redo the composition or just start over? Just start over.