The background can both help enhance the design or distract from it. Avoid clutter and too many objects in the background and keep the objects relevant.
Left: The image is too distracting with many knitted objects and distracting furniture
Right: The image has a plain background and shows clearly the shape of the garment and the details
It’s a good idea to have a shot including all of the item, and also a close-up of the details
A bird’s eye view angle (shooting directly from above) is a great way to show off a product as it looks completely flat and gives a straight-on perspective.