To Mark Alexander,
Yes, on the epoxy. But, for a stronger bond, mix it with finely
ground flint (silica powder). Also, may I suggest that you mix
acrylic paints to match the color of your glaze. Then mix the
acrylics with the epoxy/flint mix. You'll get seamless results.
I don't know if there is an exact ratio of these parts. But I got
this tip years ago from Ron Dale at the U. of Mississippi in Oxford.
He's still there, I think. Maybe you could ask him.
Dickinson State University