Material indication throughout the scene

In addition to my details, I take the time to indicate material and surface materials. In this case, there are three main materials on show: the shuttle (matte metallic), snow (semiglossy) and rocks (matte with semi-gloss to indicate the presence of ice). I keep the rock surfaces mostly matte to so that they contrast with the shimmering snow surface, almost as if a thin layer of ice has built up on the snow.