I started with very small and quick clay models win combination with sketches. It was great fun and a nice practice to translate a sketch directly into a physical 3D object. 
WIP picture. The chosen theme was made on a bigger scale to refine the surfaces and really get the design into my hands before stepping towards the 1/5 scale.
To better understand the volume, I started to play around in Maya (my first time)
The start of my 1/5 scale clay model, building up the volumes
The first layer of clay, just covering the foam
Cross sections helped me a lot to build towards the correct volumes
Me doing stuff on the clay model wearing clogs (obligatory) :) 
Second try in Maya and 3D printed the result, some quick and dirty rims. Good practice though.
Almost finished!
Experimenting with light painting.
Little photoshoot in front of my faculty. 
Clay process
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Clay process

Clay process of my Smart for ABC project

Published: