Ive noticed for a lot of cakes people have stuff coming out of the top of the cake on a wire.... like for a 4th of july cake it looks like stars shooting out of the top... how do i do this? and what do i use? thanks

hi. welcome to CC.

There is a sticky on this topic in the cake decorating forum. Well worth the read.

Here's a thread with the answer to your questions.
HTH

oops forgot to add the thread!
http://cakecentral.com/cake-decorating-ftopict-632290.html