If you're going to a convention I would suggest making the curved ones. I'm making a pair of huge wings for a con in September, and I want them to be spread out, but I have to make them so that they can fold behind my back, because the wing span is too large for the con's prop rules. And I can tell you that it was not easy to make wings that have to fold, and still look beautiful when spread out. But you can check the con's rules, if there are no rules about wingspan or prop size, I would go for the spread out look, just because it looks way more spectacular!
Cosplay's I'm working on:
Kurumi Tokisaki - 100% done - for Torucon 2013
Bubble head nurse - 0% done - for Halloween photoshoot
Calcium and Rubidium(for my friend) - 10% done - for Halloween
Princess of the Crystal - 20% done - for ??
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