The most time consuming part of the sculpt didn't seem to be the sculpting, which was really just some building up, and some "melt-carving" for the eyes, nose, and details. I spent the most time getting the food coloring color and application ready.
1) Color Mixing - I didn't have black food coloring in the kitchen cabinet, so I took the colors I had, and mixed them to get as close to black as I could. I wanted this to be a free project with whatever was handy at home.
2) Put the final liquid in a spray bottle for better control. I wanted precise application in certain areas, and the spray bottle worked well for this.