A good sketch is a type of short hand for artists; they are actually about building observation skills and training your visual memory.
Certainly any sketch or study can become the design or inspiration for a more complete piece. But I like to think of it as a fact finding mission, about learning to see as a artist.
Shady Cove is a 8x10 oil on canvas painting. It was painted at Lake Murphysboro State Park. A great site in which to paint with its gentle hills and shady shores, Lake Murphysboro is a popular retreat for anglers and bank fishing. Well worth a visit.