Once you have reached the end of your deepening procedure you are ready to apply suggestions. What you have done during the relaxation and deepening procedures is increase your suggestibility. That is, you have opened up your subconscious mind at least a little bit to receive your suggestions. This works because of the particular, and peculiar, characteristics of the subconscious part of your mind.
The most common and easiest way to apply suggestions is to have them
worked out ahead of time, properly prepared and worded, and memorized.
It should not be too difficult to remember them because they should
be rather short and you are the one who composed them. If you have them
ready and remembered, you can simply think your way through them at
this point.
Don't say "you." You are thinking to yourself, so use the first person personal pronoun "I." Some suggestions can be succinctly stated in a somewhat more formal sort of way, like, "I can feel my legs are stretching longer" Elaborated suggestions are generally wordier and more of an ad lib: "I can feel the growth hormones flowing in my vein reaching every bones and cartilages, they are growing longer. . ." and so on.
Generally speaking, the most effective kind of suggestion is image suggestion. Image suggestions usually do not use language at all. You just visualize the a mental picture of your legs stretching longer literally in your brain.
Although people sometimes see immediate results from their suggestions,
it is more likely to take a little time for them to kick in. So don't
be impatient. On the other hand, if you have not begun to see some results
within, say, a couple of weeks, you need to change your suggestions.