This is a scalloped baby blanket, also from Amy Karol's Bend-The-Rules Sewing book. Yes, it'll be sad in a couple days when I have to return that book to the library.
Anyhow, this blanket used a random piece of light green fleece I had laying around for the back, plus one vintage thrifted pillowcase for the top. Yes, I know the flowers are kinda big and the colors are kinda ugly. But that's the joy of vintage: it's often a strange mix of "Hmm, that's kinda ugly" and "Ooh, that's kinda cute!" I don't think J likes this one yet... give him time.
Here is my giraffe assistant, demonstrating the size of the blanket. Good for a
She loves it. See?