I need a screenshot that looks realistic

I have a single screenshot that must look presentation-ready within the next few hours. The job is straightforward but precision is vital:

• replace or correct specific text inside the image so the wording reads clearly and matches the existing style;
• add or remove a couple of on-screen elements (icons and small interface details) to tighten the layout and eliminate distractions;
• keep colours, proportions and overall quality intact—no heavy photo manipulation is required.

Please return a crisp, high-resolution PNG along with the layered working file so I can tweak minor points later if needed. Accuracy, a natural-looking result and a fast turnaround are the priorities here.