Going to second investing in a quality wig. If you don't like Epic Cosplay, take a look at Arda Wigs. Try taking a look at Moemall and Fantasy Sheep too, I've heard good things about them.
Conventions for 2015 (so far...): Momocon, A-Kon, Otakuthon, Sac Anime
Cosplay line-up: Mayoi Hachikuji (Bakemonogatari), Nona (Death Parade), Nagisa Momoe (Madoka Magica), Menma (AnoHana), Tsukihi Araragi (Bakemonogatari)