I sewed this pillow over the weekend, you can find my tutorial here.
Instead of the rounded petals shown in the tutorial, these come to a point at the tip. The width of the petals is the same, but they are one and a half inches longer for the large petal, and one inch longer than the small petal shown in the pattern for the rounded version. There is only one round of small petals used in this version, rather than two rounds used in the rounded petal version.
I also made the ruched larger pillow which is behind the sunflower. I used the dimensions of a regular pillow sham and measured out the front piece two and a half times the length of the back and then gathered the upper and lower edges using a basting stitch.