A rough demo

This happened two weeks ago. The Demo did give the review panel an idea of the walk with the delay but they said it wasn't enough!! so i ad to go back to my very first concept which was that, as the person goes closer to the screen(mirror) the delay starts, then the person becomes a silhouette and finally he disappears when he is closest to himself. 
I further refined and modified the concept into: there will be one entry and one exit point into the space. As the person enters, he sees himself in real time, as he goes further - the delay triggers and on his way back when he is about to exit - he turns around once more to see himself in the mirror - and he disappears...