OK, now I am sure that it's the sculpt that is to blame...
cheeks don't look like this.
one option is to correct it resculpting, the other option is to do it with painting. I recall Banshee wrote something about it when he painted Arwen and wanted to make her look more like Liv Tyler.
generally I wouldn't use such rapid transition on the cheek. I would try to cheat that it's much more subtle and feminine. give me a sec to prepare a picture
EDIT:
Click to see full-sized image
the third option is to leave it as it is...