Upwork is hiring a Graphic Designer needed to create realistic mock-ups for an e-commerce store selling t-shirts

I am looking for expert help to create realistic mock-ups for a new website selling t-shirts. I am struggling to achieve a realistic look when the shirt is angled, has creases in etc.

The designs are currently in Printify but consist of multiple uploads (up to three separate elements make up the design) rather than a single design/upload. The designs were created using Canva and Midjourney.

I am looking to have this completed within one week - it would be useful if potential collaborators would be able to connect on a call to discuss the job.