Thanks very much for the comments.
Like I say I did attempt to follow Mattys tutorial last night, and I finished it off this morning. I know post processing is one of the key things in my photography that I have a very very very very very long way to go. I have simply hotched and botched so far, rather than sit down and learn the tools and the effects they can have.
So, armed with Photoshop, I cloned, I burnt, I dodged, I sharpened, I layered, and adjusted, and had a little play.
Again, we are still far from a fully processed and completed shot, suitable for hanging in the living room, but as I said it's more of a big learning curve for me, rather than getting a printable shot out of it.
Anyway, here is the latest tinkered with version.
Following Matts tutorial, and roughly following the guide image (foreground, blown highlights etc), I was careful not to blow out the thigh, nut, and neck areas, which the levels dialog was telling me (I hold down Alt when dragging the levels sliders and it shows the clipping..handy little tip I found the other week).
I have cloned out the OOF line above the back, aswell as the extra nut, and the stray shell. Unfortunately, with the back, I seem to have taken the horizon with it...if that makes sense. And just gone too far down. Anyone know how to up the number of levels of history/undo in PS?
WRT the focus point, I can now see that it is on the shoulder. I'm as blind as a bat, and didn't notice this beforehand. I'm trying my hardest to get the attention to detail right, but I seem to miss such obvious and stupid things

I have applied the sharpening, as per Matts guidelines, but I think I've buggered it up somewhat. Along Cyrils face/nose is now a healthy glow, and it looks oversharpened to me.
The reason I'm trying to do this in increments is, I would like my errors pointed out each step of the way, which helps me learn more and more, rather than me bungle my way to the end of a processed image, only to find out that I have done this and that wrong way back at the beginning.
I've just realised I didn't crop it as per the 3:2 and centred suggestion above. (This was already cropped and half processed when I posted the above).
I've left this as a link for now