The right crimps can also make your electrical connections less prone to short.
Step 1: Braid the Wire
Take the exposed end, and twist it between your fingers until the wires are all wound in a helix.
This just makes them stay together until you can attach the crimp.
Step 2: Insert Into Crimp
Step 3: Crimp!
Grip moderately hard, and maybe do this a few times.
You want the wire to be unable to come pull of the crimp, if you lightly tug.