I must admit to always having a little trouble understanding photographs of "just clouds" or just a single cloud. I love weatherscapes, landscapes, skyscapes, etc. but I always find photos like these, while beautiful and well-executed, lacking in something (context, emotional connection) to make it a "complete" photograph - like a tree photograph that only shows the trunk and branches. Perhaps, like me, this is seen as a wonderful "sketch" rather than a finished work. Great sketch! (No disrespect intended.)