Mixing an EMULSION

Mixing an Emulsion is so easy, yet it so hard. I find it harder because at my first, i didn't get the right mixing..So what i did, I used the TRIAL and ERROR METHOD. I keep on trying, keep on experimenting what should be the right one..It tooks me for about 10times in trying..
An EMULSION is a photosensitive coating, a light-sensitive material which is used to coat film and photographic paper so that images can be made to appear.

WHAT IT CONSIST OF??
A GLUE - ordinary glue like Elmers glue, apolo glue etc.
A SENSITIZERS - Liquid in metallic orange in color
and A PIGMENT - This is the One that colors the liquid. (I think this is an optional. You can still have an emulsion even without this.)

HOW MUCH??

Based on my Experienced, in My 300ml of Glue, I put 2 1/2(two and a half) Table Spoons of the SENSITIZER and even a Drop of a PIGMENT.