It turns out, it is a really easy fun project
Here's what you'll need-
-good fabric scissors (there's a lot of cutting)
-cardboard for a template
-fabric of choice
-enough length of wide ribbon to complete the pennant (as you can see, I chose a more industrial stuff as mine was going to be outdoors in the weather)
Here's what I did-
bought a bunch of fabric on sale at Joann Fabric (they are always having sales).
made a square and triangle pattern out of heavy card stock (you can also use chipboard).
I started by pinning my flags to my ribbon, but quickly learned that wasn't necessary