And this is the result:
I made a little mistake during casting, I took a can of latex which I had just made thicker so there are some small air bubbles in it.
This example is not in thick latex because of the cold here it's hard to cast but I could not wait for the result myself
Anyway, I'm very happy with the result. The pictures don't do it any justice (If I may say so myself)
A next one, well I have this tough customer (my wife) is an Xenomorph (sorry I called it an alien ) head that goes complete over the shoulder.
Making them taper is not a problem, only the fangs have to be much smaller and I think it will lose his "horrible beast" look with smaller fangs. Anyway, it's worth a try.
Thanks everyone for the positive comments and giving me some great ideas for the future.