Practice many many many times. I was at a masquerade where three of three costumes with dramatic reveals didn't work. Either a layer didn't come off or the top layer took the bottom one with it. The costumers kept going with their performances, but it didn't shine the way they wanted it to.
On the other hand, if it works, it's great. I won best in class with a performance that involved removing an overlayer (and then doing a bunch of lightsaber forms, because, y'know.) The judges specifically complimented the smoothness of the reveal. The audience also loved it.
Make sure nothing will snag or catch, and be sure you know what movements are involved. Practice way more often than you think you should, in full costume.
And post video here!