Single Image Photoshop Enhancement

I have one photo that needs a quick yet precise Photoshop pass. First, I want the main subject swapped out—an exact image exchange so it looks like the new element was always there. After the swap, give... (Budget: $10 - $30 CAD, Jobs: Adobe Photoshop, Digital Art, Graphic Design, Image Processing, Photo Compositing, Photo Editing, Photo Retouching, Photoshop, Photoshop Design, Visual Design)