Find reference pictures to work from. In order for your cosplay costumes to be accurate, you will need an assortment of pictures from many different angles. If possible, you will want a combination of full body and close up shots in order to make out all the fine detail.
Obtain the necessary patterns. You may be able to find actual patterns for the particular clothing you are trying to make on various niche websites, but it is very likely that you will instead need to find a pattern that is as close as possible. You can browse the clothing patterns at WalMart, K-Mart, Joanne’s Fabrics, and other various department or craft stores. You will almost never find something exactly right, but you will usually find something fairly close.
Purchase the materials you will need to make your cosplay. Consider the convention hall when purchasing your fabrics. Cosplay costumes will need to be able to breathe well due to the hot, stuffy conditions they will be worn in, so definitely go for natural fabrics whenever possible.
Cut out the patterns. This will be the longest, most tedious portion of the project. Pin the pattern to your fabric and cut it out as per the instructions. Take your time and be sure about each cut before you take it, otherwise you may waste fabric and have to start over.
Sew the various pieces together. Again, follow the instructions of your pattern closely, as different cosplay costumes will require different techniques.
Try it on. Try moving around in it. If you think that you will be posing, try out some of those poses now and make whatever adjustments are necessary. It would be better if something fell off now than later when you are among thousands of people.

I couldn’t resist commenting.
Comment by quilting — August 19, 2010 @ 5:51 am