I made stars and put them on the green floral wire.  Every time I put them into the cake they still fall over.  They are ripping the cake up.  What are the tricks to hold it up?  I used heavy enough sire I believe.  Help please!  Do need to get them to go through the cake board?  I tried this once and ended up hitting my hand into the cake.  :)  hehe.  Any suggestions would be appreciated.  I am doing 2 layer 8,6,4" cakes with buttercream and fondant.

AI usually use a pretty thick wire, not the green floral wire but just a spool of 16 or 18 gauge wire. Also, I cut the end that goes into the cake at an angle, giving it a little sharpness. When you put it in the cake, get it all the way down till it hits the board, then grab the wire with a pair of needle nose pliers, and gently tap the pliers down with a tiny hammer to nail it into the board without jamming your fingers into cake.. Did that make sense?

http://cakecentral.com/t/632290/for-those-who-stick-wires-in-cakes

Cut straws or coffee stirrers to put in the cake first.  Then put the wires in the straws.

ok, I REALLY like these ideas.  I switched them onto 17 gauge stainless steel, and I can go steal some drink stirrers at the gas station hopefully.  :)  I was wondering how to get it into the cake board, so I will try to tap it in there.  Seems like it would be hard with a star on the end?

If you use a drinking straw, fill it with melted chocolate (or candy melts) before sticking the wire into it. It hardens and holds the wire still, protecting your cake from contact with the wire and the thicker straw won't easily cut through your cake like the wire did. (Plus, it's just not safe or sanitary to put wire directly into your cake.) If you do this, you shouldn't have to stick it into the cake board.
 

AI totally forgot to mention the straws... I always use straws as well, but tapping them into the board will keep em there. It won't keep them from turning tho, I might try the melted chocolate next time...

How big or how thick did you roll out the fondant or gumpaste?  It sounds to me like the stars are too top heavy and that's why they are not holding up.

I recently did a cake where I had lightning bolts on wires sticking out from the cake. I used lollypop sticks to prevent the wires from ripping up the fondant. Worked great - although each lollypop stick is only wide enough to allow one wire in it. HTH