Cleanse the space and yourself (learn more about spiritual cleansing here). Also, cleanse all the ingredients for any negative or residue energy. Ground yourself and center your energies. Make the spell jar for focus. With your full intention place all the ingredients inside. Write down the sigil (check the idea below) and put it inside too. 
Meditate a minute or two on your spell jar. Visualize yourself being focused and concentrated. 
Seal the spell jar with yellow wax.
Open the circle and release the energies.
Ground yourself with some food or a nice barefoot walk in nature.