Wow! Both are awesome, but that first one is spot on! I love Slytherin scarves!
I'd like to read an interview with the costumers for the Harry Potter movies. I bet they are so knowledgeable.
I recently read a great interview with Nic Ede, who was the costume designer for the movies Nanny McPhee and Wilde. He said there are just a few "specialists" in London who knit for the industry. I would love to be one of them!