I'm gonna take a wild stab that "CKal faces" also includes me
For sharpening, dont set the strength to 100%. Reduce it depending on the situation. Try to use the setting as stated in Cerv's cyberface tutorial and other tutorial. Investigate different settings and the different effects they give. Some area needs a lot of sharpening eg. hair, eyebrows. Some area hardly need any sharpening at all eg. ears, cheek.
You will learn what is best once you make more faces.. practices will teach you everything you need to know