I've made some one-shoulder gowns in the past and fortunately it got good reviews!  Here are a couple more made for my two loyal clients, Ivy and Aimee.  

RAE
Pintucked silk chiffon gown lined with charmeuse with matching clutch bag.  The color of this gown changes depending on the lighting and also when there's movement.  When Aimee wore it during her fitting, we were all wowed by the ethereal factor of this gown!

ROSE
Thail silk and dopedyed chiffon gown with matching rosette pouch.  I think the flounces are the highlight of this gown.  I'm sure Ivy's going to look great in this!