Photoshop Arm Into Pocket

I have one portrait of my boyfriend where his arm is hanging naturally, but I’d really like it to look as if his hand is tucked casually into his pant pocket instead. I will send you the original file... (Budget: $10 - $30 USD, Jobs: Adobe Photoshop, Digital Art, Graphic Design, Image Processing, Photo Editing, Photo Retouching, Photoshop, Photoshop Design)