I saw a hat similar to this for sale on eBay and thought, why not make my own for less? If you're decent at sewing, this project is super easy. It's a trendy way to show off your inner nerd without looking too out of place.
Royal blue baseball cap
You'll probably want to draw a pattern for the felt shapes on paper before you cut them out. These are a few different wing patterns I experimented with. I ended up using the third one. Feel free to save this image and trace off the patterns.
The "A" depends on you, whether you like one of the comic book looks or the movie style. I chose a wider "A" simply because I was trying to cover up a design on my recycled cap.
Cut out the paper patterns and trace them on the felt with a pen. (For the opposite wing, just flip the pattern upside down and trace.) Cut the felt out just inside the lines and pin one piece at at time to the cap when you sew it on. I doubled my sewing floss for extra strength.
And, that's all there is to it! Looking back, I might have first stiffened the felt or done something else to make it less frizzy as it wears. If I come up with a good idea, I'll add it.