When working under the eyes, have your model look upwards - only with the eyes, without moving the head.
If you work above the eyes (eyelid), have your model close his/her eyes in a relaxed manner. Children are inclined to shut their eyes tight. Then you can say: keep your eyes closed as if you are sleeping.
Draw the eyebrows in with long strokes going upwards for a threatening effect.
To get the stubble effects you use a Stubble Sponge. Dab a moist Stubble Sponge into black Grimas Water Make-up (Pure). Hold the Stubble Sponge between the fingers and compress it gently, so that it becomes a bit convex. Test the colour intensity on the hand first. Then work dabbing onto the skin: do not use a brushing motion, since you would remove the structured effect.