Perspective in my installation

Whilst putting cardboard on multiple panels I noticed it would only be visible and come together at my height. There are a few solutions I want to experiment with, such as placing view finders, installing steps and marking set positions on the floor for different heights. The variable of my audience's height did not occur to me whilst designing my perspective piece, it is however of course a crucial factor, which the success of this piece relies on, I will attempt to rectify this error as best I can.