How to Visualize Silence in the Mind

There's roughly 40 meditation practices that are mentioned by the Buddha but let's start with one of those or any others you are familiar with. Just sit for a while just bringing your attention back again and again to whatever object of awareness you're cultivating not adding any new ones. In this what's called nimitta meditation one of the oldest meditations in the Dharma just expand the size of that shape and color until it consumes everything in your mind then give yourself over to this expansive internal visualization.