One induction method that is rather common is the use of countdown.
You may begin with the number, say 100. Imagine you are going into a deep basement and there are staircase leading you downwards.
With each step you take, your number decreases, from 100, 99, 98, 97..,,,,all the way to 1.
Each step enhances your relaxation so much so that when you are close to 1, you feel so relaxed and comfortable that you are in hypnosis state.