For first timers even the melted wax of a candle is adequate. It is the skillful cracking that is important. While applying, the wax should not be overheated or it will catch fire. Correct knowledge of colors is also important. Practicing on small pieces of cloth helps in the beginning.
Patience is of course a very important factor too.
The cloth used should be strong enough to bear the heat and wax. Cambric, poplin and voiles are used besides pure silk. Synthetic fabrics should be avoided. Since ancient times Indians have been known to wear vibrant colors and dyes which were made from barks of trees, leaves, flowers and minerals. Blue was obtained from indigo, while orange and red were from henna.