Adding more clay...

At this stage I have applied about 3-4 layers of clay. Its about 4-8mm thick on the sides and top surfaces. Because I am using screws to hold the canopy on, I was able to take it off to apply the clay to the surfaces beneath (where the t-section of timber is visible). I will then re-attach the canopy and clay the top surface of that.

Using the heat gun to warm the clay surface prior to aplying extra layers of hot clay helps the layers bond to each other and (hopefully) not peel away when I comes time to shape it.