What do you mean by how? i use clear quick drying gorilla super glue.. a little dab in the eye socket (ultra minnow style) and place the eye on it with a little pressure..just enough to spread the glue. if im doing smaller bucktails i will use a tweezers. I by no means am experienced as i have only been doing it for a year or so but his works for me.
Sorry I probably should have worded the question different. I meant what do you use to glue them on. I tried super glue and it seemed to mix with the powder paint somehow and didnt bond well. I also tried the brown gorilla glue and that worked it just made a mess when it dried and expanded