Invocations are powerful tools in the craft. These empower you to do rituals, spells and invite the God and Goddess to join you in your working. They can be very short or very elaborate. Which ever way you do it, they should feel right. Like any working, if you are stubbling over words of others than use ones that work for you. Just remember when invoking the God, Goddess or even the elements it should be done with love and respect. Never order or demand their attention.