When working with larger elements I like to make cards bigger than standard size. That way I have lots of room for my design and as a bonus there is plenty of space for writing a note inside.
This card fits a business size envelope. The base is 8 inches by 9 inches, folded in half to make a 4" X 9" card. The vanilla layer is cut 3 1/2" X 8 1/2" and dry embossed with the Manhattan Flower folder. The flowers are Woodland Walk DSP cut with the Fun Flowers die. I curled the petals slightly before adhering them to give some dimension. Super easy!!