(I'm back with more!)
Camping is always oh-so-cool to do. Forget the facts that there are bugs (such as those wonderful mosquitoes), even the slightest breeze makes the campfire smoke unpredictable and bound to hit you in the face, it's not at all easy to make a campfire that won't go out instantly, relieving yourself without any toiletry luxuries (such as toilet paper) will be one of the worst experiences ever if you're not used to it, and, even with a sleeping bag, it's going to feel like hell lying down on dirt and rocks for eight hours straight. It's still awesome and totally fun to do, so your characters should always bypass any affordable motel to instead sleep outside so they can "save money".
Kids are always a good excuse to continue a story. Who cares if the world has been saved a hundred times over and every single atom on the planet is happy with its existence at last? Everyone wants to read about your characters' children, and don't let anyone tell you otherwise!
Family relations suck more than 90% of the time. Unless a sibling is in the good group or their worst enemy, there should not be one. As for parents, they should only be cast as major characters if they were abusive to another main character, and then it should only be as villains. Grandparents are only there to tell important tales that will be heavily relied upon later in the story and to pass on strange accessories that hold great power. There is no such thing as aunts, uncles, and cousins, so you can forget about them.
Japanese names of any sort is HOT. This is not only names for characters, but names for places and cool objects. Why call a town something so boring as "Jeffersons Town" when you can call it something as cool as "Aoiki"? C'mon, it's Japanese - everyone will love it, even if you mess up completely!
Speaking of using foreign languages... If your character is at all foreign, they can use foreign words as much they want, even if they have not been in that country or heard that language since they were two. French and Japanese are recommended. Heck, go ahead and combine them together, even if their sentence structure is not at all similar. Everyone will love you even more! After all, plain, easy-to-understand English is so yesterday.
Language barriers do not exist. Everyone speaks the same language, or at least knows the "main" language enough to speak it well. And, if you must show off your 1337 skills with another language, all of your characters will understand what he/she is saying without a problem.
Hidden powers need not be explained. They just are, simple as that.
The only functional relationships out there are with villains. All good couples must cheat, have mass amounts of sexual tension, and more than their fair share of arguments. No one wants to hear about a nice, working relationship!
Sex is cool to write. It makes you, like, the Master Writer! Anatomy is not important to consider; your character can have an orgasm just by someone holding his/her hand if you want. Also, believe it or not, STDs and unwanted pregnancies do not exist in the writing world. Rape is always pleasurable as well, and it is always an attractive person of the desired sex who does it. That goes for kidnappings, too. There is never any psychological distress either unless you need an angst scene.