If you change the thread title to indicate you need help with painting a Chucky head you may get more people who can really help you interested in checking out the thread.
I've seen a few of the Chucky movies, but which movie is this one from?
Things look a little too pink and it's too uniform. It should be toned down a bit - possible with a wash of the color of the face mixed with a little bit of either red or brown, such as burnt umber or something similar.
Regarding the string sutures, it can be made to look slimmer by not painting them too dark and perhaps do a lighter shade out on the sides. Or, cut the down and drill holes and use real string.
For teeth you should start with an ivory color and then do light washes and drybrushing of brown. You can also do it the other way around - do the brown first and then slowly drybrush the ivory color on the teeth without going all the way out to the edges, so you leave a darker edge, which will make the teeth look more natural.