The picture conveys a sense of lightness to me and the model's pose seems ot be "in the moment" of lifting the lid and discovering the unusual fare. The back lighting on her gives her belly a nice shadowed curve as well as lightens her to the same level as the flowers. The darker plants give this a much more directed feel towards the flower pot. It feels like the photographer is saying there are brighter things to come before her and I see a connection between her full belly and a pot full of something beautiful. All in all a charming use of props and expression rendered in a very nice contrast that isn't jarring or too overt in its portrayal.