Step 5: Personalize the basi shape
Embroid eyes and mouth, pips and zips. For Phlox' crest I've use chain stitch in pink and then re-embroidered them with a thin brown yarn.
Travis' hair is crocheted directly when I made his head. Just change colour brown/black when you need.
Trip's, Malcolm's, Jonathan's hair is emobroidered with little stitch. I've parted Trip's hair on the right and pull some extra yarn under Malcolm's hair on the forehead.
For T'Pol (and T'Mir and a Spock I've made sometimes ago for a friend) just start at the top of the head (the first round) and embroid hair with long stitch.
For Hoshi's hair, pull some long pieces of yarn like in a doll and then tie it on the temples.
For Phlox's hair I've the the top like T'Pol's, then I've curled up some yarn on a knit needle (put it on the needle, wet the yarn and leave it for a day or better a week or best a month on a hot radiator) and sew them on the back of the head.
Ears (make two): I did only Vulcan's ears (not Human's).
With pink (or brown, if you're doing Tuvok):
1 half double sticth
1 slip stitch
Sew on the head.
Now you have the cast, you can play :D Have a nice "private Enterprise 5th Season"! Mine is here: