First you will have to cut down the castle helmet, if you plan on using it. The brodie helmet doesn't need any changes.
Make the wings out of green stuff, you can also use Miliput or Apoxie Sculpt, but I wouldn't recommend it, because they are more brittle after curing. I suggest you read this
very could article to learn more about modeling with green stuff.
Paint the wings golden and glue them to the helmet. Congratulations, you are done!
Btw. I love the explanation from the first issue, how Flash is able to catch a bullet in flight:
"His process of thought and action due to his inhalation of hard water gases have been so quickened, that he has the speed of light itself! As a result he can easily match the speed of a bullet... When two bodies travel along together at equal speed even tho they meet, there is absolutely no friction - and therefore no injury"
As you can see I made two flash drives and I am going to give one away. Write a comment and tell me why you deserve it. Whoever gives me the best reason by the middle of next month is going to get it.