First off, the eye textures. I've provided eye textures you can print
off. Print these off on your home printer to about the size you'll need.
Use photo quality paper. Plain paper will bleed though and not look
nearly as good. (More on that later)
Next, you need a two part epoxy. For this, I've been using
Smooth-On's
Epoxy Cast 690
The stuff isn't very expensive, one trial size pack will do like a
million eyes. lol . It hardens in 24hours, so you have lots of time
to work. When hard, it is as clear as it was when liquid. You can
likely use other epoxies, I think Hobby - Lobby carries a brand, but
I've never used it.
Take the eye texture prints and cut them out to the round size of
the palette wells. I recommend at first casting a blank well with
epoxy only, and you can use this to cut out the eye textures, just
lay it on the paper and cut around it with an exact-o knife.
The process is pretty simple. Set your palettes on a level surface.
Mix the epoxy per instructions, and fill each well that you plan to
make an eye in. Fill the well, don't overfill. Now carefully glide
the print face down from the edge of the edge of the palette over
the puddle of epoxy in the well, until you have it completely over
the epoxy, centered on the well. Placing the paper this way as
opposed to just dropping it on the puddle helps make sure you don't
get an air bubble caught between the epoxy and the paper.
Once you position the paper so that its floating on top of the
epoxy, I cover the back with a few drops. This way the paper is
fully embedded, and this thing is now completely waterproof. Set
this a side for a day or so to harden.
Once hard, WHACK the palette to demold them. You may or may not
destroy the palette, guess that depends on your palette, and your
whacking. Your eyes are ready! You can polish them up if you wish,
but I find that they are glossy enough coming out of the clean
palette.
Here is a photo of some finished.
Cool thing with this method, you get nice refraction on them at an
angle. You can see this in this next pic. I think it makes them look
more real.





