Last week I've tried a new medium for my flowers - cold porcelain clay. What can I say? For some projects like Ranunculus, blooming Roses or another type of petal-full flowers, cold porcelain clay is better than polymer clay. It's pretty sticky, but petals could be made very thin - polymer clay doesn't allow it. For a flower like Hydrangea, Daffodil or Lily polymer clay definitely is better.