Seeing the flowers at an unexpected angle really ups the drama of the look. I can see it working at a wedding or bridal shower, especially used to frame a doorway or entrance to a home or ceremony site.
If you want to try this look at home, make sure to keep the branches hydrated until the last possible minute. To do so, cut the ends of the branches at an angle, and trim away leaves, thorns, and bark that will be below water level (the branches can absorb more water if the bark is removed). Submerge the angled branch ends in clean water until you're ready to display them.
Can you see yourself decorating with topsy-turvy branches like these? Where would you put them?