I go to school with a lot of sequential art majors, and have gone to a few lectures by comic book editors, so I'll give you a few hints, even though you're probably not going to take any of them.
1) Draw all the time. Do not EVER leave home without a sketchbook. Draw at least 5 people from observation every day (not photos, actual people). Comic book companies value artists with good senses of anatomy and proportion more than people with stylized artwork. Everyone has stylized artwork, not everyone can draw accurately.
2) Go to comic book conventions. You have much better chances of making an actual impact on an editor here than by mailing your stuff to them. Don't pester them or insist that you have the next best thing, cause everyone does that and they are used to ignoring dumbasses that approach them that way. You are better off asking for some advice on getting published or what you could do to improve your technique.
3) If one of them is gracious enough to give you some tips, LISTEN TO THEM. If they say show me what you have in 6 months, send it in 6 months. Not the next week, not a month later, 6 MONTHS. If they say you should improve something, practice improving that, and don't whine about it or get pissy with them (which will probably insure that you NEVER get a contract with that publisher). These guys see tons of art every day and can tell you exactly what is wrong with yours better than probably anybody else you are ever going to meet.
4) Self Promote. Make your own comics and sell/give them away, make a webcomic, business cards, stickers, flyers, t-shirts, etc. Anything you can think of to get your name out there. You have a much better chance if you come to them with an audience than if you have a better idea and no one has heard of you. If THEY have heard of you, it looks even better, so do everything you can to get your name out there.
5) One of the biggest things that editors look for in artists is development. You are probably not going to get a contract the first time you bump into one of these guys, so keep working and practicing and getting better, and the next time they see you, you will have a better shot if you have shown consistent improvement. Don't sweat it if it takes multiple tries. Your odds get better every time as long as you are showing consistent improvement.
6) Be memorable. Don't do the same shit everyone else is doing. Anything you can think of to make yourself be remembered without being a pain in the ass is going to help you.
7) One of the biggest mistakes that up and coming artists make is pigeon-holing themselves on a single massive project. Don't get stuck on one idea. Editors want to know that you can work on something, get it done, and move on to the next thing. This shows initiative and work ethic, which are very important when you have deadlines to meet. Having several different comics in your portfolio will serve you better than having a single series with many chapters.
8) Don't expect to make as much as established artists. Even if you can draw as well as one of them, your name does not sell comics because nobody knows who you are. That is why they are getting fat paychecks any you are going to get peanuts starting out, if you even get an offer. Be dilligent and stick with it, and you will be successful. Get impatient, whiney, or pushy about money and you will get fired.
Hope this helps. Good luck.