Sometimes possibilities and suggestions appear in your dreams. A good idea might be to work with the new image and see what it is expressing. The inner world is light and an airy atmoshpere even though it uses the same images that are in the physical reality which have weight, substance, and and density. The dream images are etheric, can disolve and disappear in an instant, especially upon awaking in the morning. It is difficult to grab onto them and bring them into ordinary reality such as by being able to write it down or tell the dream.. If you lose the dream suggestion you can always ask again with the intention to incubate the dream anew. consider thinking about how images apper to you in your inner dream world and compare against the out world physical reality.