This file comes with all the pieces you need to create this 3D Hydrangea flower, which includes the base (no Styrofoam needed!). The pieces are sizeable to fit your needs and are compatible with both the 8x12 and 12x12 mats. You can find additional images and a full tutorial on my blog: http://jamielanedesigns.blogspot.com/2014/03/3d-carnation-and-hydrangea-paper-flowers.html