Use a toothpick for the stirring. I find most people have to find this out for themselves. If the glue is not mixed properly, it will not hold. I suggest working with a five minute epoxy glue. A longer setting glue can be used and will give you more working time.
Epoxy glues are a resin with a hardener.
Obtain the brand that requires equal amounts to be stirred together. Work quickly, if using the five minute epoxy. I stir one hundred strokes and then a few more. I just use my fingers, 1-10, on each one. Keep close a cloth and nail polish remover or lacquer thinner.