Collaborate with me to create a stunning bouquet that not only pleases the senses with its fragrance and visual appeal but also stays fresh for an extended period. I'm interested in learning about modern flower arrangement techniques and innovative decorative options that will make our selection truly unique. To begin, I'd like to know, how would you design an exotic flower arrangement that incorporates a mix of colors, textures, and scents, and what tips would you offer to ensure it remains beautiful and fragrant for a longer duration?