It takes time to physically see the aura around a person or spirit, but you can always feel it. How I learned to see auras is ( please please do not try this if you are new to Satanism or have never use ouija board, if done incorrectly it can back-fire emencly) I have a spirit in my house, I spoke to him though a ouija board everyday for an hour a day for about 2 months. At first it started as just feeling his power, then over the course of about 2 weeks I could make out his figure when I called apon him. This lasted a while, then I started to see blue and green "waves" emulating from his figure. Near the end of the 2 months I could fully see him, I could even smell the cigars he smokes. This experience isn't typical, for some people it take many many years to actually see someone's aura. Just practice meditation, allow yourself to be open, meaning allow spirits to come see you feely. I hope this helps a little bit, explaining something in person is a lot easier for me that over a chat. Best of luck, may Satan guide you to the path of true enlightenment.