You first begin with a meditation.
Use a meditation technique and process you are comfortable with.
Now, visualize yourself leaving your body and now sitting opposite of yourself.
Tune in and observe what you see, sense, and feel as you begin to ask this other 'self' some questions.
Ask questions, such as "what are you feeling?"
Now, observe what hints you start to see, feel, and sense as this other 'self' responds to your question. Notice the emotions and feelings being portrayed or projected from this individual. In other words, analyze this other 'self' as a person in front of you, but be objective in this process. Also,make sure you only do this using a positive aspect. You don't want any negativity being part of this inspection process.
You can also add other topics and question - things that you would like to know about yourself, for example.Some thoughts or responses may be expressed through your unconscious self, Higher Self, or even spiritual self.
If you did this exercise in front of a mirror, the process would then become a mental exercise rather than an exercise to develop your senses. The objective of this exercise is to understand your feelings and develop your intuition. This is why you do this exercise in a meditation rather than a mirror.
This type of questioning & observation process can help broaden your ability to sense your different feelings. It can also help you tap into gaining a greater understanding of who you are and how you really feel. It can also help improve your intuition abilities using all your senses. This is why this exercise works - you are tuning into your feelings and senses and then using an internal process to validate what you sense.
This exercise will help strengthen your ability to tune in,sense, and develop your intuition.