We rely on product images to model accurately create out models. The more images and information you can get, the better. Now, with this example model there are no source images, but in general it’s really useful to have source images when laying out your UV’s. This is because the way your UVs are laid out will inform how textures are shown on the model.
a. For example, the direction of wood grain on a model can tell you which way the UV’s should be laid out. In the example below we can see that the UV map and texture on the front of the drawers needs to be somewhat square, but the UV map and texture on the side needs to be long and skinny.