Nebula source has been cropped into lighter areas of it then covered with a pastel gradient layer.
step 6 of 9
Trees and steps are added in background
step 7 of 9
Lilies are merged into tree layer and swan being chopped
step 8 of 9
Swan is chopped and will be cloned to get rid of large shadow area, then nebula layer is added and reduced in opacity to just allow highlights to shine.
step 9 of 9
Finally, birds are added with brush tool, then an additional nebula layer is added with more being removed from foreground area to add to perspective.