Split tone and grain help

Hi,

Just did my first split tone pic in LR3 and added some grain....admittedly it is quite heavy handed, was wondering if anyone could tell me how to add grain but more so on the background and not her face.......
Preferably only in LR if possible but will PS if I have to (and if it's a lot easier haha)

Ta
Phil

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I don't have LR, but think you can't selectively apply grain. In PS - create a new layer filled with 50% gray and change blending mode to either overlay or softlight. Then go to Filter/Noise/Add noise with settings of your choice. Add a layer mask to hide the effect.

Thanks Dennis, will give that a crack

I think that in LR you could try brushing over the face and giving a bit of negative Clarity. That should reduce the grain.

I like the image as it is