Selected the parts i wanted to make silver, multiply a couple of times and apply filters (one to screen and then an overly of a silver colour).
step 2 of 4
Cut out the images of the tap and handle and pasted/blended them onto the shoe image.
step 3 of 4
Added a hue/saturation layer to make the tap look more like the silver colour of the shoe and reduced the colour.
Took a section or the shoe's tartan, and layed this over the handle (which i desaturated first). Set it to overlay, bloated the larger part slightly, and used dodge/burn to give it a 3d look.
step 4 of 4
Just added a black 'hole' and dodged, burnt in and around the edge to give it a bit of depth.