I made a gumpaste rose arrangement to use as a wedding cake topper. I stuck the flowers on a ball of gumpaste, the whole thing turned out really heavy. It is already solid and I do not know what to do, I am afraid that topper may sink into the cake.
What do I do to avoid this?
You could put a board under the topper and dowel it so that it will be supported like a regular tier. That's the easiest way to assure yourself that it's not going anywhere.
Next time, you could use a styrofoam ball to stick the flowers into, then it won't be so heavy.
Chances are, you could probably put the topper on the cake without any support anyway, and it would be fine!
You can put dowels in the top tier and place the topper on a cake circle or plastic seperator plate just a little smaller then the topper and you should be fine. I would use a little BC to secure the topper to the plate.