Adding flowers and more grass
First I cloned grass to fill the dirt areas.
Borrowed flower image from www.Imageafter.com
resized and positioned along the building. Add a layer mask to create the flower bed.
Used small selection on a new layer for the bouquet.

A finer touch would have been to reveal a little of the original dirt on the clone layer that follows the edge of the new flower bed.

forum discussion: http://forums.dpreview.com/forums/read.asp?forum=1006&message=28413990

original image by Melissa: