I have 1000+ digital arts which needs to be put into 50+ mockup images

I am opening a digital customized art products selling business along with my existing art gallery and I need to put my arts into mock up images. I have more than 1000 digital arts which are based on print on demand. I need these mockup images within 7 days and they needed to be realistic I will provide the digital arts. I need at least 20 mockup images for 1 digital image. What you have todo is simple drag n drop and bit of resizing. But images should be in high quality png type. It's good if you can use variety of mockup images to different digital arts. Examples are provided. Better if your work looks more professional than them. Please mention your capacity on the bid mentioning