Photoshop Mockup Updates Needed

I have a series of high-fidelity mockups that are nearly finished; the only thing holding us back from sign-off is the imagery. The text, layout, and overall structure stay exactly as they are—what I need... (Budget: ₹600 - ₹1500 INR, Jobs: Adobe Photoshop, Graphic Design, Photoshop, Photoshop Design, Visual Design)