How to Cosplay well?

Do well in cosplay should pay more attention to choosing cosplay character and story. It must be most like anime character, including feeling. So this will need coser to know entirely character information, including character feeling. Research of character, is precondition of cosplay. If I want to cos this character, and I want to make costumes, and to full of character feeling, which should be the simple choice? Kingdom Hearts Cosplay Costumes