You can influence other people's perceptions through magick, as you would effect them in any other way. Nothing is done differently. No special "spells".
"People only see what they are prepared to see."
-Ralph Waldo Emerson
But if you're looking for David Copperfield stuff, that's stage magic. Although long ago, Magicians of olde used chemistry and other tricks of the eye and science to create visible "magic" that wow'ed the mass majority of the population due to them being uneducated, it is not the spiritual magick that we discuss here. Remember "magi" means wise, and most magic is rooted in science and medicine on a physical level. It's the surface level. When you get below the surface is when you see the spiritual side which is the far more meaningful one.