If you are working on an important piece of magick, you can say this blessing first. This is a good spell to ask your familiar to help out with if you are lucky enough to have one. Just their presence in your circle will give your magick a boost.
Great Diana (or Hecate), Queen of Witches
Look down on me, your child
As I walk the Path of the Ancient Ones
Bless these tools, that I might use them well
Bless these spells, that they may work as I desire
Bless my heart and mind
That I might practice in perfect love and perfect trust.
Shine your light on all my magickal workings
For the good of all
And according to the free will of all.
So Mote It Be