I wore trousers with the big belts, usually low on the hip, back then. It's hard to get the proportions right if you are short and can't wear heels.
Tanya, those scarves are small silk squares folded on the diagonal and tied in the back or folded a couple of times more with the corners inside the fold, and tied in the back or ends brought to the front and tied under the band. A bandana works for a casual version, especially if washed until it is soft, not stiff. Back then scarves were either small bandana-sized squares or narrow rectangles much shorter than today's with diagonal ends. Those could be wrapped around the neck too. You still see these at thrift stores sometimes.
I wonder if scarf styles will change to reflect the 70's.