You should familiarise yourself with the steps required to administer your EpiPen® and watch the demonstration video below so you are clear about what to do in an emergency. You can also order an EpiPen® Trainer so that you can practice the steps with your friends and family.
There is no need to remove clothing to use your EpiPen®, but make sure the orange end will not hit buckles, zips, buttons or thick seams on your clothes.