How To Use An Emergency Glucagon Hypo Kit

The thought of having to give an emergency glucagon injection fills me with dread. How can you possibly stay calm and focus on what needs to be done to save your child's life knowing that it might already be too late?! This hypo kit has expired so I thought it might give me more confidence to have a practice with it. I have to say that I don't think I did the best job but I feel better that I have a had a go at preparing it!