Courtyard mockups

I’m looking for some help with a relatively simple asset. I’ve made an initial version using AI, but it’s only about 50% there and I need it refined properly.

I have a photo of a courtyard containing some outdoor items (e.g., shed, bins). I need a designer to reposition the shed in the image and add an additional shed, to illustrate layout options for my landlord. Everything will need to be roughly to scale — I have all the measurements.

There will be two versions of the final asset, each showing different shed sizes. I’ve attached the AI attempt for reference.