To develop your clairvoyance, you must be able to attain a higher level of consciousness. You need to work on your spirituality and this can be done in several ways. The most common way is through tapping the power of your third eye. Another effective way is through constant meditation.
A practitioner of Zen will tell you that everything you do should be done with a purpose, with awareness, and with intent. A Zen tea drinking meditation involves using intent and awareness in the preparation, making, and drinking of tea.