I finished the hat I had started before I had begun the socks. I got most of it done before I started them, but all those cables on the socks kept me distracted from finishing it. My other problem was that I couldn't find the yarn I wanted, it was hiding under the bed!
When I made the spikes, I made the first one too small and then attached it before I re-checked the pattern. I then thought it would look cool if the spikes got bigger as they went down the head.