I made these tonight with my little cardboard templates, and using the suggested size bows from a thread about lengths for twisted boutique bows.
The one bow is actually in purple shades, and I am planning to stack the polka dots with the orange and green striped ribbon.
They may not be absolutely perfect but they work for me. I'm not really sure how to sew the center of the bows so I just use ribbon or thread to tie them.
ETA-This is the tutorial I used to do them
. They are supposed to be pinwheels.