These oils are rubbed over the surface of the candle before it is lit. They are available through occult suppliers. Books of oil formulas are available, if you wish to make your own. Incense sticks are commonly burnt alongside the candle. An old legendclaims that incense brings one's prayers heavenward.
Most occult shops offer an array of incense blends.
Some are specifically made to correspond with planets. Simple scents are available in many places. The above oil chart also applies to incense. Look at the chart of Planetary references, and find the one most suited to your need. Now, using a nail, awl or small knife, carve a symbol of Divinity near the top of the candle.