When I am looking to make an outfit I look at in parts rather than as one piece and then I try to see it as normal clothes.
And what I see when looking at Aang is that he is wearing:
- a yellow, long sleeve turtle neck
- Yellow, baggy sweatpants
- brown knee socks
- and a red over cape that clasps at his neck.
After having found what he is wearing, I then go to my pattern sites and search until I find "easy" patterns that match what I am looking for. And when I say easy I mean it. Many sewing patterns make "novice" pieces that are easy and don't require a whole lot of sewing know-how.
Here is what I found:
For the Turtle Neck: http://voguepatterns...php?page_id=260
For the Pants: http://mccallpattern...php?page_id=843
For the cape: http://mccallpattern...php?page_id=481
For the socks, they are something that you can buy during the fall. Knee high socks are very much in right now. And then, if you go to your local fabric store and ask them for show soles, you can attach the soles to the bottom of the socks so that you achieve this look without having your little brother walk around the con in just socks.
For everything else, all the bands and things, you can use scrap fabric or matte ribbon(comes in all kinds of thicknesses).
Just a forewarning: Pattern searching takes time. There is a lot to go through and sometimes you may not find something that 100% fits what it is that you are looking for. When that happens, you have to start to think outside of the box. "Can I use this dress pattern, which has the top that I want? Instead of sewing the whole pattern I can just alter it to use the top."
Hope all of this helps.