Umm.. you can see where he brushed and maybe used a smudge. He can't teach good asthetic sense.
Quality stuff as usual a50, good to see somebody makes use of all those filters, masks and blending modes.
To everyone else.. my suggestion is to play with soft brushes and the smudge tool. Then try things like colorizing and after that play with the color balance some.. you can get some really interesting results from adjusting the colors of your shadows, highlights and lowlights.