So - my 'to do' list on this one right now includes:
1. adjusting the iris/pupil on his left eye so that it is not quite so far left,
2. softening the light dark contrast in the background trees,
3. some work on his legs so they don't look so wooden,
4. toning down the girl in the background so that she doesn't jump out so much, and
5. anything else I happen to notice, while I'm at it (
there always seems to be something more, doesn't there 
), that needs fixing!
Please feel free to comment or critique, I'm sure that fresh eyes looking at this will see things that I've missed.
Thanks!