[DustyPorViva]

An empty doorway never looks good. You need to discern it from the rest of the level -- to portray that it leads to something, or that there is depth and content to the doorway. This is why you often see game graphics have pure black in doors instead of a floor or some such. Even pics1 is constructed that way. You can either place a shadow light effect in the doorway, a pure black hallway with a small transition tile(like pics1), or with a more realistic casted shadow graphic into the doorway.