To create these circles, start with cardstock. Lay several strips of washi tape down with no gap.
Then use a punch or electronic cutting machine to cut circles (or triangles or squares or any other imagineable shape).
Once you have a a good collection, start creating your layout!
I loved layering these circles under a piece of printed transparency. And while these are brighter colors than I am typically drawn to - I felt like they were completely appropriate for an action movie layout - since an awful lot of super heroes wear black, red and yellow!
Have fun creating your next washi adventure!