Next is the mouth.
Create a new layer (and new layer set), name the layer "Mouth base colour".
Let the mouth layers be on top of the Base Skin Layers.
Pick an orange/red, quite desaturated colour for the lips.
Pick a semihard round brush. Uncheck the brush opacity (Other Dynamics), the base colour of the mouth will be painted with a solid colour.
Paint the shape of the mouth, use the UV-layout as a guide. Go back and forth between the 3D-application if you need to, to make sure the lip colour is in the right place.
The following images are shown at 200%.
Create a new layer, move it so that it's underneath the Mouth base colour layer.
Next, I recommend creating a new layer for each new colour, as it is easier to make changes that way.
To make sure you don't paint outside of the mouth, CTRL-Click on the "mouth base colour layer" in the layer palette, that way you will stay inside the selection when you paint. To hide selection, press CTRL-H and to show the selection press CTRL-H again.
For the following I usually use my irregular custom semihard brush, and with "Other Dynamics" checked for opacity.
Pick a very light colour (light yellow, light pink, light orange) and paint lightly around the mouth, especially above the mouth.
New layer - on top of the base colour layer, pick a darker reddish colour to give the lips a variation of colours.
A new layer, and with a small brush, paint a few soft "lines" and some variations using a darker colour, around the middle of the mouth.
Remember this is only the colour map. Spec and/or reflection map will take care of the shininess.
Next we will paint the nostrils. Use the UV-map as a guide.
Use a dark redbrowninsh colour for the middle of the nostril and a pinkish colour surrounding it.
I usually put some colour to the ears as well. Areas were the cartilage is close to the skin is usually more yellow in colour and the fleshier areas redder/pinker.
Create two new layers, one for each colour. Use a soft brush and paint with a low opacity setting. Use the UV-map as a guide.
