You can always try! As long as your article is well written and informative, it will have a chance of being accepted. The key to TNT publication is persistance. I usually have to send something in several times before it is published. Their reply message will tell you if you need to make improvements.
You would be shooting for the "Too many good entires this week" message.
A good TNT guide is this:
http://www.neopets.com/~SecretRulebook