Pink Water Lily Panorama

I was watching for Dragonflies by the pond, but it was a quiet day. I saw this nice Pink Water Lily and decided to try a 4 shot panorama of the Lily. I was using a 400mm lens with a 1.4X teleconverter and extension tubes because I was watching for Dragonflies. I shot 2 upper sections and 2 lower sections with an overlap on all edges. I assembled them manually in Photoshop using masks for the overlaps and lined up the 4 frames.