To me, the dress looks a little odd with the blazer (it looks like a tube top and too summery), but might pair better with a cardigan.
Other things that work well for business casual:
-Cardigans
-Fitted sweaters
-Pencil skirts
-Trousers / work-appropriate pants
-Many "work-style" dresses: close to the knee, covering up top, A-line or pencil, non-shiny or flashy material
I found some great montages:
