we haven't placed these on the ceiling yet but have to admit the material was less than impressive when opened up to take a look.  well packaged however the material is  styrofoam and the design is not as accentuated as the pictures indicate.  I am hoping it will look better once placed.

update:  while the material does seem cheap, it looks much better once placed.  no one can tell that it's styrofoam.  it looks great!