You got some nice pictures and had some nice opportunities.. The first one, however, looked like it had a contrast problem.. I played with it a little bit-hope you don't mind-it did come out a little too sharp, maybe..
Currently im a ZERO at Photoshop, I will need to look at picking up some basic PP skills so that I can begin shooting in raw.
These have only been resized... and some have been cropped as you can tell. Honestly iv got to start being ruthless with QC of Photo's and most of these would fail.