One of the greatest sins in any story is false suspense. The kind of 'suspense' that disintegrates the moment you give your reader one second to think about it. And it's an easy trap to fall into, so watch carefully for it. If your story hinges on the question, 'Will Superman be pushed so far in his battle against Lex Luthor that he'll have to kill him?', or if your big cliffhanger moment is, 'Wow, is Spider-Man really dead this time?', then I understand Food Lion is hiring.
Mark WaidA superhero is someone who, at some point or in some way, inspires hope or is the enemy of cynicism. Even if you bog it down with political allegory, or even if you're doing celebrity allegory. You still need to take the cynical out of it.
Mark WaidWhat makes a good editor is staying the hell out of the way as much as possible. ... If you're a DC or Marvel or Dark Horse or BOOM! editor who's assigning work, then if you did your job properly to begin with, then the people you've hired can be trusted to do what they do without excessive meddling. The ideal situation you're shooting for as an editor is to groom a collaborative creative team to the point where their work sails effortlessly through production and the most you have to do is fix the spelling and the commas.
Mark WaidThe best comics editors have the smallest egos. The worst ones feel like they have to justify their salaries by making changes just so they can leave their fingerprints. Every creative medium has those guys, and they're all loathsome.
Mark WaidIn the long run, the quality of your work is all that matters. That is your only resumรฉ. Be professional. Make sure your editor or publisher can always reach you. Do what's asked of you if your conscience can bear it. But know that, five years from now, as fans or prospective employers are looking over your published pages, no one will care that this story sucks because the publisher moved the deadline up or because the editor made you work an android cow into the story. All they will care about is what they see in front of them, and they will hold you responsible for it, no one else.
Mark Waid