You open the vials of sterile water and Copaxone and clean off their tops with an alcohol wipe. You open the first syringe, draw it back to the 1.1 ml mark, and inject the air into the sterile water vial. Then you draw the water out to the 1.1 ml mark. Then you inject the water into the Copaxone vial. But point the needle toward the side of the vial while you're squirting, or else you'll make too many bubbles.
Bubbles are bad.
Then open the second syringe and draw it back to the 1 ml mark. Inject the air into the Copaxone vial. Draw the medication out into the syringe, checking vigilantly for bubbles and injecting the solution back into the vial if you see any. No matter how nervous the idea of giving yourself a shot might make you, by the time you've gotten through all the above jazz, you'll be grateful that it's the only step remaining. You wipe off the injection site of the day with an alcohol rub, pinch up a 2-inch fold of skin on one of the seven approved injection sites, and give yourself the shot, which I found far and away the easiest step of the whole process on Wednesday.