The phase that the moon is in can be very important in casting a spell. Some spells absolutely need to be cast during a particular moon phase in order to be effective. Here is a break down of the phases of the moon and the types of magick that should be done durning those phases.

Waning Moon...to draw away from, to banish something, to send something or someone packing. In other words this is the time of the month to get rid of things. So when casting a spell during this time of the month keep that in focus. You wouldn't cast a spell to bring more money into your life but you could cast one to get rid of debt (which would give you more money). Get the picture?

New Moon...This is good for making wishes come true. Especially the New Moon of August.

Waxing to Full Moon...Now this is the time of the month to bring/draw things to you. Say you want to cast a spell to get rid of an illness....instead of sending forth intentions of getting rid of a particular illness you would draw good health to you. Afterall under this phase of the moon drawing something to you works much more effectively than trying to send away/get rid of something. Don't fight the flow, just think about what you are trying to accomplish and work with the moon.