I totally winged it for this project. I didn't follow anyone's tutorial and just bought a bunch of fabric and went for it. I used no sew tape (where have you been all my life?!), scissors, and iron, and some ribbon. I also used my cricut to cut out the banner template and trace them on the fabric.
I left a smidge of space between each pennant so you could see the cute rick rack ribbon. Super easy and the whole project only took a couple hours. I'm pretty pleased with the end result and I think it adds a little oomph (as my aunt would say) to her room.