I have noticed that a lot of guys make this tear duct area very difficult to do. When I do the eye I always leave enough thin caruncula skin so that all you have to do is just lay it back into the slot in front of the eye. Then with a modeling tool shape the caruncula area and the eye crease on top. Then if you look at the flow of the tear duct with a good eye reference photo you will see how the entire area is shaped and how it flows. If you make the slot small enough and thin that tear duct skin down you won't have to use any clay. But, if you overdo the slot then you would add clay. But, keep it simple and make sure you always have a good eye reference in front of you.
When painting that eye keep it simple and light and smooth. I see people painting these red, gold and every color in the book. Look at the attached photo and ask yourself how many colors do you actually see around the entire eye? Then again I see some of the dullest looking eyes. Some people can do a really good job on there eye set etc. but fail to put a wet look around that eye. Just look at the photo and see if it's moistened. Come on you guys can do better than this.