Meditation is the very delicate art of doing nothing, it is the perfect relaxation. Any effort you put in will get you out of meditation. Its like sleeping, as long as you are asleep you do not know, but as soon as you get aware that you are sleeping, you are awake.
It is best not to analyze the experience or share the experience with others, a good(deep) or bad meditation is something that we are labeling to our experience, it may have been deep even though you felt otherwise.
Sri Sri Ravishankar says that there are three stages of meditation.
“When you go deep into that empty space that you are feeling in meditation, three
1) At the beginning of the meditation, you don’t see anything, you just see
emptiness, but when you put attention there when you continue there,
2) then you start feeling the vibrations. This is called spandana, when you feel
some vibrations, some sensations,
3) and then that vibration becomes light.
So the first step is really nothing but relaxation, and then from there feeling the
energy, sensations, vibrations, and then it becomes light.”
So its best to let the experience be and trust the practice, the practice given by a guru has the grace that eventually guides you. And if you do not have a guru, don't worry s/he will find you when it's time.