http://www.instructables.com/id/Super-Hero-Costume/ by member Holloughby I was able to make a new costume today in just a few hours. However, I have made some edits to it. All the marks for sewing, I used hot glue. I updated the cape so it didn't need safety pins (I had none on hand) and I added a belt.
For the cape, I did not have safety pins available. So, instead of cutting along the shoulder seam, I cut around the collar and left it attached. This way it will slip over my head to put it on and off. For the star, I used a trim of fabric to make the L rather then just plain marker. To do this, I cut part of the front shirt into a strip and hot glued it along a sharpie marked script L. Better pictures under the belt.