Make a Ravenclaw scarf by crocheting, knitting or felting. Note that the knit scarf pattern has thick blocks of color.
Start out with a dark blue tie. Use light blue or bronze fabric paint to add the lines on the tie. If you're using paint and a brush, employ a ruler to help you make straight lines. A fabric pen works much easier in this case, and most fabric stores have them in many colors.
Make two thick lines, then skip an inch and make a very thin line. Skip another inch and repeat this pattern.
Luna's Ravenclaw Robes
Make your own Ravenclaw Robe in any size. I takes just minutes with this easy tutorial:
Luna sometimes wears a wacky pair of Spectrespecs. In the movie, these glasses allow her to see Harry while he's got on his invisibility cloak. Make your own right here with a free template and photo tutorial:
Luna sports a head of platinum blond hair. If you don't have the right hair color, you'll need to spring for a cheap wig or even bleach your hair. If you have especially dark hair then it's going to be very difficult to get such a white-yellow color with any kind of hair dye. I suggest spending the ten bucks on a wig instead, because bleach can be very hard on your hair.
Luna's hair is always a little messy. Rub a dot of gel on your fingers and run them through your hair to give it more texture.
Any thin stick can be made into a wand. Peel off any bark and use a piece of sandpaper to smooth down the sides of the stick. For a pointed end, use a small knife to whittle the end of the stick. Shaving the end of the stick should be done with adult supervision. Apply a dark or light wood varnish to your smoothed wand.
For Luna's uniform: A white button-down shirt, black or gray sweater vest to wear over it. Wear a black pencil skirt, knee-high socks and black dress shoes.