I need rendering bags, like pdf files to be dressed onto a model of the bag

I need this 5-10-15 times a year. The one I have used for many years has health issues, so I need to fint a new one. How we worked, was: I sent him a photo of the bag. He made a 3D-model. After that I just sent pdf-files, and he "dread" the model with this new design. See example. We do this instead of taking photos. ...I hope rendering is the right word for this... Indicated budget is pr design.