I found a couple of great techniques online. Hope it helps some of you. ^_^
Mirror Protection Technique ~ said to help protect self, loved ones and possessions from unwanted, intrusive, and/or toxic energies.
Aura Closing Technique ~ said to help stop the attraction and attachment of astral junk to your aura.
Here are some great shielding techniques. (For more information and techniques on grounding, centering, and shielding, look in the link library under the keywords: grounding, centering, shielding)