To start making a doll, make a rough outline of the shape of the doll that you will keep going back to as you build it - to make sure the proportions stay the way you want. Then the head - I start with a ball of tin foil for the clay to go over. I do this because polymer clay is heavy, and I don't want a topheavy pirate.
The eyeballs I mold out of white clay so they are the same size and shape. A dot of paint makes the iris, and acrylic gloss finishes the look.