My grandson (age 3) chose Anakin Skywalker for his Halloween costume this year and at first I was just going to make the hooded cape. I used a child's robe pattern but added a hood, made it longer and made the sleeves come to a point at the end. It seemed kind of incomplete somehow so I googled Anakin Skywalker and found this link with a pretty good closeup so I could make the rest of his outfit under the cape. http://farm2.static.flickr.com/1245/526908575_5d0a0096a2.jpg?v=0
I used vinyl fabric and lots of velcro to make the over-vest, the sash, the shin guard/boots and the arm cover. Add in a black long-sleeved shirt, black pants and a light saber and he's ready to go. As you can see, it's pretty serious business saving the universe, but he was very thrilled.