Warm and Cool Landscape/Cityscape

I thought of an idea for a lesson plan involving the use of warm and cool color schemes using underglazes.  I figured the students could choose between a landscape or cityscape and produce a silhouette type effect on their pots.  The blues in the cityscape turned out a bit darker than I planned but you still can see it somewhat in the photo.  Below are my samples:

Baltimore Cityscape

African Landscape