a decorative peice of paper with all the information about the party and put like another decorative peice of paper to make the information page more party like.
Decor:
pick a theme and stick to it and just use decorations that go with you r theme and for decorations go all out.
Food:
Try to find out what your guest like and make sure their really good and mostly finger foods so your guest can pick at the food whenever they get hungry
Music:
whatever you like.
Highlight:
make sure your the most outstanding theme highlight of the party.