In this article you can find how you can act like a fairy.Fairy's are beautiful beings so enjoy act like a fairy.

[edit] Steps

Find a pretty dress: Pink, orange, yellow, emerald green etc. to be a fairy you have to find a dress that suits your complexion. If you have pale skin don't choose yellow because it will make your skin look washed-out.
Put your hair into a pretty hair-do:If you have short hair then you should use pretty accessories such as bows, flowers, hair bands and other things. But if you want to be like a fairy you must have your own special hair-do, like plaits and ribbon or a French-plait with flowers. If you can't find anyone to help you with your unique hairstyle then just put it up into a bun.You can be a ballet fairy.
Make wings:You can make your own fairy wings.
Makeup: Fairies usually rely on their natural beauty but sometimes they like to make themselves stand out at apart. So you can wear a little bit of makeup to make you feel beautiful. It is vital that you don't wear too much, maybe a little bit of lip gloss to make you shine but otherwise you must not ruin your natural beauty.

[edit] Tips

Just have fun! You should enjoy acting like a fairy! It is an amazing experience.
Read some storybooks about fairy's you can find more information in it on how fairy's behave.
If you want to be "Navi" from "The Legend of Zelda: Ocarina of Time," try practicing saying "hey," "listen," "look," and "watch out."