add an animal print or dark pant (a leather pant would be another great alternative) to a floral top, add a leather jacket to make it even more edgy. add a boot to incorporate those "must have" fall pieces.
throw your over-sized sweater or cardigan over a summer dress and pair it with some wool socks and chunky heels or booties (the socks could even be a floral print).
for those casual days, throw a dark or light denim button-up over some dark leggings. add a floral pattern bag to lighten up the look. even a floral pattern shoe with an animal print bag would be a great look too!