Part Four: Fine Tuning
This part is tricky at first, but with a little practice will be easy.

With the Stretch tool, pull the points on the ear that will join the points on the head. Use the Shift key to snap to points as you drag. When you're satisfied, validate.

In this example, I started with the points on the front side of the ear as they were harder to see from the front side because the eyes and cheeks obscured my view. I had a better vantage point on the back side. If I had moved the back points first, I would not have been able to see the front points at all.

Once you are satisfied, use the Move tool to move the ear away on the horizontal axis.
After moving, validate and select the Delete tool. Delete the polygon on the ear closest to the head.

Validate the action and select the Move tool. Move the ear back to the head restricting the movement on it's horizontal axis. If you place the hand on the part of the ear that will mount on the head, hold down the Shift key and carefully drag towards the head. It should snap right into place.

Validate.
Select the Symmetry tool in the Assembly palette. A bounding box appears on the ear. Click on the side closest to the head. A mirrored ear appears flush to the original ear.

Validate.
With the Move tool, restrict the movement to horizontal and shift/drag the new ear into place.

Validate.
We are very close to finishing the head. If you look at the ear, I have added an extrusion going inside the ear to accentuate the hole.

Weld the ears to the head by selecting the Weld tool and lassoing all pieces and validating.
Let's add a neck.

Rotate your point of view to the back and below the head. Select the Delete tool and the Edges (2nd) option. Zoom in and delete the two rear edges and validate.
Select the Sweep tool from the construction palette. Click the polygon from which we just deleted the edges and drag down. Click, change the direction a bit and drag and click.

Validate.
Let's build an eye.

In the construction palette, select the sphere icon. Click and drag a small sphere into the workspace and validate.

Resize and move it to look something like this one and validate.
In the assembly palette, choose the Duplicate tool. Make certain the eye is selected and click with the tool then validate. Visually position the new eye to mirror the first.
Select the head and then select the Smooth tool from the Modeling palette. You may choose to explore the different smoothing options. For this model I chose the Catmul in the middle. After clicking it, I hit the "+" key on the numerical keypad once to increase the smoothing. When you find the setting you like, hit the Return key or roll the cursor off the screen to your right to validate. If you wish to model the head more, you can double click the head and an information window pops up. Choose "suppress smoothing" and click "Ok". Remodel and choose a different smoothing option if you like.