When introducing yourself...
1) Type more than one sentence. In this case, less is not more. We want to know more about you. The more you write, the more interesting of a response you'll get from those welcoming you. We're honestly generally nicer to those who write more. One sentence introductions don't go over well here. You'll make a bigger impact with more and we're more likely to remember you.
2) That being said, it's good to write a decent amount, but don't tell us your life story. We don't need to know about how your dog is named Alfred or about your sister named Matilda and how much she drives you insane. So in short, don't write a novel and keep it general.
3) Share how you became interested in Vocaloids! Telling us about your favorite Vocaloids, songs, producers are also never bad to include in your introduction.
4) Do tell us how you found VocaloidOtaku(VO)! We're always interested in knowing how you got here in the first place.
5) Share anything interesting about you that will make you more memorable. Sharing likes, dislikes, hobbies, favorite anime/manga, anything.
6) Respond to any posts you get from people welcoming you! It's a great way to meet people and start a friendship.
You've been around for awhile, you have a good grasp on the site, and you want to be friendly and welcome the new members! That's great, but you can make just as many mistakes when welcoming as people posting introductions make.
When welcoming others...
1) Do not type the same response OVER AND OVER AND OVER. Typing the same generic "Welcome to VO blah blah blah watch out for rape blah blah" does not go over well. Especially when you're just copy and pasting it in every thread.
2) Do not post pictures in introduction threads unless it's been approved by the mods. We will sometimes make exceptions, especially if it's a picture that has questions on it for the new members to answer. If it's just a "welcome!" picture, don't post it. If it's completely irrelevant, don't post it.
3) Respond to the information the new member gives you! Writing a one sentence welcome is just as bad as them writing a one sentence introduction.
4) Be kind to the new members. You were new once too. Make sure to give them a friendly welcome and try you best to make them feel at home.
5) Don't let conversation go too far. A few posts exchanging information is great but if too many irrelevant posts start to accumulate, take the discussion to the Bro Lounge or private message.
6) If they don't provide enough information for you to respond to, feel free to link them to this tread so that they can revise their introduction to include more about themselves.
If you follow these guidelines, you'll be all set! Feel free to send myself a private message or one of the other mods if you have any questions.