DIY: Chevron Pouf Ottoman

I'm back with another nursery DIY project! I feel like I haven't jumped too far onto the chevron bandwagon yet, until I realized the two main areas I've used it in the nursery - the rug and this chevron pouf! It's so bright and playful for a nursery, how could I not? I was pleasantly surprised at how easy it was to make the chevron, especially using the tutorial from Better Homes & Gardens (find it here). I tried to take pictures as I went, but forgive me if I'm lacking a bit... the tutorial is really great though, so maybe just use that? I found the fabric at JoAnn's and it's actually outdoor polyester fabric. It's really thick and I think it will be easier to keep clean than regular home decor fabric. I love the colorful chevron pattern and it works perfectly with the nursery colors. Once I cut out the paper pattern and taped it all together, it was super easy to cut out the eight fabric pieces to sew together. They recommend using a liner, so I used an old sheet. I also used poly