I would suggest searching this site by costume for others who did Midna and analyze their photos to see what you think will work best.
Adlez-AxeL: "I'm not weird, I'm gifted"
Franklin Delano Roosevelt: "Happiness lies in the joy of achievement and the thrill of creative effort."
2014 Anime LA
2014 LA Anime Expo
Jedi Link 1.0 Complete
Jedi Link 2.0 Patterns Completed, Leather gauntlet cuffs and boot covers.
Hero's Shade: In the process of starting. 0% complete.