Thanks 4 the comments!!
Clochette: Colours works, well the harmony works, not the contrast, I think you have to focus the light on Sherlock.Is easy in your comp cause you have 2 light points...One cold in his back(the window) and a calid hard point light in the fireplace.If you start darking all the pict and than you start to built all the volume with this 2 light you gonna get a great result!!
pd: well, this is How i work maybe youre not looking this kind of ilumination...(sorry my poor english)