Im trying to make my African - American hair more flippy when i flat iron it! HELP!!!!!!!!!?

My hair is kind of thin and when ever i flat iron my hair its really smooth, but at the same time its fly away. Like if i try to flip it it doesnt fall right back down it kind of stays in that position. Its even worse when its windy outside!!! I really need some tips or products that can help this. Do i need more volume in my hair? Any answers would help!!!!!!