There are a lot of different parts that aren't noticeable at first glance. Some things are peeking out from underneath especially all around the borders. A cloth hankie in the upper left, a hint of a plate at the bottom center. The whole right side has one image underneath starting at the nest and below that is a book illustration with writing that you can see a hint of at the bottom right corner of the collage.
The lady holding the flowers, to me, is the culmination of all the ideas in the collage as I see her arranging, then offering flowers to