If one is going with a theme, it needs to be consistent. I can't say what theme Jill was going for. Her dress was lovely and Derick looked quite dashing. Score 2!
I agree with those who said those white tiers looked like hem-lengtheners. Did they use retired linens instead of buying a fabric in an aqua tone? Did they not employ a seamstress (even a friend pro-bono) to make sure they hung straight and even? Looked like a Rush Job to me. Score -6!
The clunky sandals so did NOT fit, very 80s. Better to go with a flat or a slight wedge in a putty color (as suggested above). And lose the brown belts too, replace with a fitted waist or self-belt type sash.
I'm not a fashionista but I've got a fairly good eye for art...just felt a need to add my comments to the mix.