Planet Cake is proud to say that they make all of their sugar flowers themselves. Some places ship them in, but not us.
Find a recipe for flower gum paste that suits you, or of course you can buy pre made paste from specialty food or cake decorating stores. A basic recipe uses icing sugar, gelatine, glucose, vegetable fat/copha, water and albumin powder.
Firstly melt the gelatine, mix it with liquid ingredients and then knead into the solids. You will need to knead it for a long time, or of course you can use a bench top mixer. Leave sugar paste to rest for a few hours before you start assembling your flowers.
You can make your flowers a week in advance, to avoid stress. Use a pasta machine to roll your flower gum paste out to the perfect thickness. Make the flowers on wires, stuck into a piece of foam. Use flower glue to stick each petal on. This is made out of tylose powder, which is a setting agent, and water.
A rose needs to be made in stages. To make the perfect rose petal shape, place the flower paste on a tablespoon to dry slightly before assembling. When layering, you must remember to let each layer dry before you apply the next. Other kitchen implements that can help with creating the perfect petal curve include a muffin tin and a tea cup. Instead of painting your flowers, try dusting and airbrushing for a more realistic effect. You will need to buy your airbrush from specialty pastry suppliers.