Some of the key things to think about are:
- The angle and intensity of the sun
- How you're going to control it and bounce it back into the subject
- Backdrop material, hopefully without a lot of wrinkles
- (I've never ironed so much since my mother made me do it.)
- Needs of the flowers so they stay fresh looking
- Angle of the table top the object is sitting on
- Angle of the surface the camera is placed on
- Angle of the camera to the subject
- Reducing camera shake by setting a delayed release
Next time I'll bring up a few more tools. But really, it's all about how the light is directed on and around the subject and getting your angles straight.