Edited pictures for front cover

As one of my house colours is red, every little bit of red on this photo is still in colour but the rest black and white. I used photoshop in order to create this effect.
The problem with this is that the first thing you look at when first glancing at this picture is the red of the guitar, this is not my aim as the most important feature of my cover is the girl herself therefore I need her to be the first thing you see.