White Tulip Flower Arrangement By: David Z. Ghoukassian Updated on: April 05, 2017 More Articles How to Cook Boneless Skinless Chicken Breasts Cleaning Unglazed Ceramic Floor Tile How to Write an Invoice How to Draw Graffiti Letters First Aid Treatment for Wounds Related About the Author David Z. Ghoukassian, known to his fans as David Z, has created eye-catching floral arrangements for weddings, trade shows, corporate clients, and Beverly Hills "A-list" clients and celebrities.