Stubbsy,
I think that you may be going a little too far with the background. Instead of trying to obliterate it
, perhaps a more subtle approach. Darken it a little, blur it some and maybe desaturate it some, to seperate it from the subject. I think the colours and style of the background can work well with the subject. There is just a need for some seperation.
You are right, this shot has something that appeals. Perhaps its the cross eyed look or maybe it is the combination of colour and highlights - I think maybe the later.
I had a bit of a go. What I did was to start by duplicating the layer and creating the layer mask. I then duplicated this layer and mask so that the original is left alone - this allows room to play without going through the tedium of recreating the mask. I used a brush with a hardness of around 40%. Next, gaussian blur was applied to this layer. Enough so that the blur was right at about 50% layer opacity. 50% was an arbitrary value that I used so that the foreground and background layers would blend reasonbly well and give room for adjustment. Next, still working in this same layer, I played with brightness, contrast and saturation to taste - yours may differ. I thought about brightening her eyes a little but did not get that far.
Cheers
Matt