I think your second sketch of mike is more like the original photograph, you have captured the expression in his eyes!
Just stoping by to say 'hi', Good to see you tried the sketch again.
Go to...paintanddrawtogether.blogspot.com. Hope to see you there.
How cool is this post?!? I can totally tell that you are "seeing" things differently from the first sketch... Great job with Mike!
It's always good to re-visit a sketch, and your second attempt is quite different and shows greater observational skills. In art I don't think there is anything more important than looking, looking, looking. You are doing well here.