I want to make a quilted pillowcase.

My friend Bonnie made a pillow. It was done for a group of friends of mine that have/had a mixtape project called Ctrl C / Ctrl V. Friends of ours in bands record stuff and it ends up on these mixtapes. It's a neat idea, I think. Anyway, my friend made a pillowcase for them, and this is it. I would really like to make something like this.