A Wizard Did It

((Context: My character, a Tiefling, is trying to sneak down the corridor at our party wizard Miana’s guild, somewhere she shouldn’t be and doesn’t want to be recognized.))
NPC: Oh, hey Miana! Why…. is there a demon stood next to you?
Me (OOC): Shit. I’m gonna roll to convince her that I’m just an illusion.
Roll: *8*
Me, halfheartedly: I’m an illusion, created by a wizard.
NPC: Uh… huh. Not a very convincing one.
Miana: Oh, um, yeah. I’m working on it, it’s still a bit rough around the edges.
Miana (OOC): I’m going to cast Minor Illusion to make the Tiefling look shimmery and poorly-rendered.
GM: Okay, that’ll let you roll your Deception again.
Roll: *18*
Me, motioning emphatically at Miana: I’m an illusion, created by a wizard!
NPC: Ohhhh, now I get it. It definitely needs more work – can you make it say anything else?
Me, shaking my head sadly: I’m an illusion, created by a wizard.
Me (OOC): Looks like she’s buying it! I’d like to roll to escape down this corridor while moving as if I’m a poorly-animated illusion…
Roll: *natural 20*
GM: Wow. You jerk, slide, and T-pose your way along the hall. When you get to the adjar doorway, you sidle through it so quickly and smoothly that onlookers are convinced that you clipped through it.