A Pencil Skirt
The plaid shirt and the boots will tone done the dressy-ness of the pencil skirt and lace tights. By putting the gold bangle over the shirt will be unexpected and the three finger ring is simple.
The band t-shirt definitely tones down the floral skirt while the sandals are a different way to wear flat shoes.
The denim shirt and riding boots tones down the pleated skirt while the jewelery gives the outfit a playful feeling.