I've round the edges of the bookcase to make it a bit more carbonite block-like. There's some grey paint in the picture, which serves no purpose other than giving me an idea of if you can see any joints.
I laid out a bubblewarp body shape, stiffened with some cardboard tubes. The clothes were then soaked in Poundland PVA glue and then placed over the body shape. I then poured more glue all over the top. The hope is that the clothes will turn hard but, with the weather having turned for the worse, it may be a while before the glue even thinks about drying.
A slight problem is that the carbonite is going to be blocking my garage door for the foreseeable future.