What type of corsage design features a combination of different flower sizes and textures?

The choice of free-form designs as the answer highlights their fundamental characteristic of showcasing a combination of different flower sizes and textures. Free-form designs are characterized by their organic and natural aesthetic, allowing for a more artistic expression. This style does not adhere to strict symmetry or structure, enabling florists to creatively arrange a variety of blooms in ways that emphasize their unique qualities.

The use of contrasting sizes and textures in a free-form corsage allows for visual interest and dynamism, drawing the eye and providing a more casual, yet elegant, look. This flexibility is ideal for creating custom pieces that cater to individual tastes, making it a popular choice for special occasions.

In contrast, the other design types either follow more rigid structures or specific patterns, which do not lend themselves to the diverse combinations that free-form designs embrace. Cluster designs, for instance, tend to group flowers closely together, which may limit the variation in size and texture.