It was dipping in at the hip, mostly because my fabric choice wasn't as stiff as the reccommended taffeta, and I had also left out the second peplum layer.
Here's another picture taken from the front:
I had thought of putting some netting underneath to puff it up a bit, but then my mother suggested using shoulder pads!! It always helps to get a second opinion :)
So I found a pair that had been saved from a dodgy jumper, and covered them with some of the checked fabric like so -
And then stitched them onto the underneath of the peplum at each hip -
And Voila.... it perked up quite nicely!!!