Assuming you are using Adobe Photopshop
You have to use the burn tool to make his face (from the nose to his forhead) darker.
I don't know if you have modifed the headshape but if you had:
Go back to the original headshape and modife everything you did except the nose. If it is the nose in the bhed file that is wrong, just paste over the orginal face (2 layers) and use the erase tool to get the new face back, but let the orginal noose stay instead of havin' the new one
If it's still fucked up (like my houston v1 patch

) do a totally remake and start from scratch (likem my houston v2 patch

)