Looking great! But you are really going a very complicated way 
Edit: What kind of plasticine are you using? The only modeling clay I can get here in germany (besides usual earth clay) is mars clay. The con: You can only knead the clay while it is warm and it cools damn fast. The pro: When you are done with shaping up the general sculpt its a pleasure to work with
Edit: What kind of plasticine are you using? The only modeling clay I can get here in germany (besides usual earth clay) is mars clay. The con: You can only knead the clay while it is warm and it cools damn fast. The pro: When you are done with shaping up the general sculpt its a pleasure to work with