A useful product image shows the real item, not a similar object invented by the model. Start with a clear source and decide what may change: surroundings, lighting or composition, but not the product's construction.

Supply useful angles for complex shapes and identify details that cannot change.
Define scale relative to hands or familiar objects.
Do not publish an attractive result that shows a different product.
For a concept, yes. For an accurate product photograph, use an image of the real item and check the details.
The brief may lack a clear support and contact shadow. Specify the position of the object's base.
Keep light, angle, background and scale constant. Change the product or one staging detail, not the entire scene.