This was very informative. I tried it out quickly on my own and came up with a pretty decent duplication.
Two questions if you don't mind! (possibly stupid ones at that) How do you determine what color to use in a fill layer? I don't use them to totally recolor the image like you did here, but it seems to have warranted a really good result. I just never know how to decide what color would help an image (which I know depends on the coloring in the untouched image anyway). Also why did you use an unsharp mask and then sharpen it a few steps later? I don't generally use the unsharp mask (because it still baffles me) but I just thought they both took care of sharpening in general.