This picture shows the vectoring process very early on. The only parts that were converted so far are the skeleton’s right-lower rib cage and some of the arm lines.
Also note that the shirt is missing. In order for the shirt to lay in a realistic manner, Susan drew an entire skeleton, then layered the shirt on top of it. All of those bones will be covered in the final product, but this is a great example of the extremely high level of detail and amount of work that goes in to a project like this.
Mica says she spends about 15 minutes per day on skeletons, about all she can stomach. Once this painstaking process is complete, she will do a materials mock-up, which will approximate color and texture.