I've been able to achieve a pretty good wet look by setting the skin highlight and reflection to full white. Tears, etc. can be done by adding a sphere prop, shrinking it down in the "x" and "z" direction to about 1-2%, then setting transparency to 20-25% and placing the resulting long, thin object on the figures cheek with about 2/3 of it submerged into the face. If you really want to get fancy, make a "droplet" prop out of a sphere and a cone, with the cone shrunk in the "x" and "z" directions to fit the small sphere. Parent one to the other, make it about 25 % transparent and it makes a good tear.