Krista, If you want human ears that lay close to the head, sew them on after assembling the head. I used this for my Spock Doll and it worked well, just don't add the points
I cut two pieces in a vague gord-like shape, sewed them right sides together, turned them and added stitching to mimic the patterns on my ear. After finishing the head, I handstitched them to the sides of the head at the front lower part, where my ears join my head.
Here is where he is posted if you would like to see the ears. http://www.craftster.org/forum/index.php?topic=249557.msg2770177#msg2770177 Hope that helps!
That is exactly what I was looking for! That helps a whole lot, although he'll be wearing a helmet most of the time, when you take it off I don't want him to look funny! =] I've bookmarked your thread to go back to to look at.
Spock looks great! How was that hair to work with?