Important tools for Great Photography
Get Lots of Light!
Natural light works best for any type of photo and should be used whenever possible. Typically, shooting your photos during the day will grant the best results. What matters is not only the quantity of the light, but the uniformity and distribution also.
Hard shadows are created when the size of the light source is small compared to the size of the subject. Conversely, soft shadows are created when the size of the light source is larger than the subject. For your needs you want to aim for soft shadow.
To avoid a hard shadows, we use a flash diffusers. In turn, the light will be distributed in a softer, more even way in all parts of the object, rather than be centered in one spot.
Rob Haller, St Louis Photographer