Hi Lou,
I have been painting eyes for over 30 years and I have a whole chapter dedicated to my way of doing eyes. In fact, I have three different approaches: painting the eyes, punch with miniature punch sets and tape , and decals. My philosophy is to use what works best--or brings the best results.
In my opinion the eyes are important but part of the whole. Of cause they do matter but are not the entire focus.
You see Lou, the secret here is that the face must support itself without the eyes. The face should project feelings, emotions and character, and in some cases death where the eyes are closed or missing. The eyes seal the deal and or throw it over the top on an already well painted and vibrant face. This is one of the reasons, why I do the eyes last not first.
So I am sending you a sketch of my eyes, I just did for this post! As you can see, I can draw and paint eyes, but that does not exclude the decals, should I see the need or it makes my task easier.
Again, my philosophy is to use what works best and brings out the best results.
My brush is at you service!
Alex