There really isn't a pattern for it. I just started it like I was making a hat and keep going with increases until I felt it was big enough around to make a throw pillow. I used an "F" hook and sc all the way. MY yarn was the cotton flocked that I still have a bunch of to use up. Once I had a nice size pillow round I started the same process with decrease rounds until it was small enough to stuff.
Before stuffing I sewed the heart motif I had made to one side, then stuffed, then completed the final rounds of closure. Once the hole was closed I use another motif flower that I made and sewed it to the opposite side of the pillow, covering the closure. Not that it needed it but this kind of gives you two pillows for the price of one.