As you practice it with regularity, the gifts of your Spirit begin to unfold naturally. I suggest you continue with whatever meditation method your are using, if you find it is easy, enjoyable, and you feel inwardly peaceful while meditating. The Inner Light Meditation or the Mindfulness Meditation. These are methods that can, in time, take you to the deepest states of consciousness, and help you unfold the gifts you are seeking. I'll preface the answer to your question, by explaining that it is best to approach each meditation without any particular expectation, and without concern for reaching a specific goal.
Every meditation is a valuable part of a larger process of spiritual unfoldment.
These are a few of the possibilities, and they can overlap and blend with one another in varying degrees. These experiences are tastes of the ultimate enlightened state toward which we are heading. The more regular we are with meditation, the more likely we are to have such experiences. It can be helpful to request a bit of grace in your meditation, but beyond that, it's best to go about your practice, and enjoy whatever occurs. Literally, I don't think I possess the ability to visualize.