Pillow Fight

With our very first adult purchase of our new couch last month, I'm searching for the perfect pillows to accent the room, but am struggling in making a decision.

So friends, keeping in mind that this is my couch & living room, and this is the color palette that I'm going after, which pillows should I buy (or DIY)?

Some of these actually pretty expensive ($110 for a pillow, really??), so I'm debating finding similar fabric to a few of these and somehow learning how to sew and DIY. We'll see if that actually happens though...

Left to right: 1, 2, 3, 4, 5, 6, 7, 8, 9