Picture 1. Place the first polygon according to the picture. Remember to check the location of the polygon in both Front and Right views.
Start the modeling by creating a plane object in the Front view. Change the width and height segments in the plane object to one. Turn the plane object into Editable Poly (right-click the plane object in modify panel and choose Editable Poly from the menu) Now the object is Editable Poly so you can freely edit it by working in sub-object modes. Activate vertex sub-object mode and move the vertices of the polygon approximately according to picture 1.
Every time you move vertices, segments or polygons or you create new polygons, make sure you check their location both in Front and Right views.
Picture 2. Model lips by using nine polygons.
Create 8 new polygons by copying edges:
Place the new polygons approximately according to picture 2. Remember that you can move polygons in several different ways:
Picture 3. Symmetry modifier is used to mirror the object horizontally. From now on the other side of the face is modeled automatically.
Add symmetry modifier to the model. If necessary adjust the settings of the symmetry modifier. The Symmetry modifier is used to mirror the object horizontally. We still continue to work on the left side of the 3D model and the right side is constructed automatically because of the Symmetry modifier. Now the 3D model should look like in the picture 3.
Choose Editable Poly from the modifier stack and turn on "Show end result on / off toggle ". Now you can see the effect of the Symmetry modifier even when you are working in Editable Poly section.
Add Meshsmooth modifier on top of Symmetry modifier and set iterations to 2. Now you see what the complete surface will look like. While working it's often recommended to turn off the Meshsmooth modifier but turn it on every time you want to see the final surface. If meshmooth modifier is on, the model can be too complicated for hardware and the modeling might slow down.
Picture 4. New four sided polygons (quads) to the mouth.
Picture 5. Complete mouth modeled with polygons in 3D Studio MAX.
Create new polygons by copying edges. Activate edge sub-object mode in Editable Poly. First choose 9 edges surrounding the lips and copy them by pressing shift in keyboard and using the scale function in 3DS MAX. (You can always copy objects by pressing shift key and using move, rotate or scale functions). Place the new polygons according to picture 4. Repeat the operation and create another ring of polygons to the mouth according to picture 5. Now the outer side of the mouth is complete.