Arrange a House Party As a Teenage Girl

This is really a guide for teenage girls to throw a good house party (and not get anything broken)

Steps

Make sure your parents will be out of the house for the entire weekend! If it is just for the night chances are they will come in early or phone you that they will be there soon.

Tell about ten to fifteen people about the party, and soon the word will spread. All in all, it's likely fifty to seventy people will show up if you don't contain the invitation.
Make sure all the good china/ornaments are stowed away safely, and that any rooms you don't want people in are locked
Make sure you have lots of food. Things that cater for all people; vegetarians, vegans, light eaters, heavy eaters etc.
Try to keep alcohol to a minimum, unless you want your friends being sick all over your carpet!

Keep your drinking to a bare minimum. You're the host, and losing control of yourself means losing control of the party. You won't be able to monitor what's going on in your house if you have too much to drink, and you don't want to force your friends to take on your responsibilities.
Play good music that everyone can enjoy, preferably what your friend group normally listens to. Nothing too heavy or too slow!
Be sociable! Keep yourself moving and talk to every one. If someone arrives that you don't know (friend of a friend, for example) try to get to know them a little better and if they are making a mess ask them to leave.
If something does, sadly, get broken, or someone makes a mess of a room, don't fret. If you get angry, or start chasing around after people with a broom, people will get sick of you. You can tidy up later!
If there aren't too many people, perhaps suggest a game of spin the bottle, dares, postman's knock or seven minutes in heaven. These games can be a lot of fun.
When the party dies down, and most of the people have left, there will definitely be a five or six people hanging around. Try to politely get rid of them, nothing more interesting is going to happen

Get straight to tidying as soon as the last guest leaves (not before!). Your parents will be coming back tomorrow night (or maybe tonight, depending on how long the party lasted). Get the bulk of it cleared away and then go to bed!
In the morning, have a tidying frenzy. Do one room at a time, and break that room into four manageable quarters- doing a bit at a time
Don't make it too tidy or your parents will be suspicious.

Take a picture of every room before the party, so that you can put it back the same way as it was before afterwards. If the room looks rearranged, your parents will get suspicious.
Set an alarm so you don't sleep in too late. You need to get to tidying fast!
If you want this to be quite a quiet gathering then don't just let the word spread, tell exactly the people who you want to come and exactly that they shouldn't tell anyone else about it.
If something gets broken, gather up the pieces. You don't want someone stepping on them, now, do you!
It's not an outrageous request to ask your friends to stay late, or stay the night to help you clean up, after all, it's highly likely they helped make the mess, so they should help clean it up.
Anything personal, like a diary, should be stowed away with the valuables too; don't want someone reading that!
Ask people to bring their own music; someone will probably take charge of the music so you won't have to worry about changing the songs.
If you are playing spin the bottle/dares etc., then make sure everyone is playing. If half the people are playing and half the people are running around laughing and going wild, it will be very distracting!
Don't drink beer if you are under 18!!
Don't have everyone put their garbage in a cupboard. Your parents won't be happy about that!

If complete strangers show up at the door (and especially if they are much older than you/look like a bad crowd) just say "Sorry, I don't know you" and close and lock the door immediately. You don't know what they might do.
Keep the music volume down. You don't want the neighbors to complain, or people to have to shout over it.
Don't act suspicious when your parents arrive back, just chill out and watch TV.
Be aware of laws in your state regarding alcohol or any other illicit substances especially if you are underage.