Start by get a goofy photo of yourself and open it in Photoshop. Click on the new layer button and the brush tool. Now with the new layer selected start outlining your face. I started with a 5px brush and went to a 3px for thinner lines. You might need a bigger brush it all depends on the quality of your photo.
Make sure you closed up all the shapes good. I always zoom in and out to check. After the outline is finished make several copies of the outline layer. Just right click and hit Duplicate Layer over and over. Now rename these layers different parts of the face (exp. Skin, eyes, lips, etc.).
Now hide the outline layers and pick the eyedropper tool. With the original photo layer visible pick a darker color from the face. With this color unhide the skin layer and use the Bucket tool to dump it in the face area. If the shape of the face is not closed you’ll know it right away because it will fill in you whole picture. Now if you’re a skill artist with the mouse you can simply fill this area with the brush tool instead. The brush is better quality but takes a lot of time and patients. Do the above step with all the facial features. For small area like the eyes you’ll most likely need to use the brush. If you don’t the bucket tool may add to much color (see photo).
After painting all the pieces lets do some highlighting. Go back to the original face layer and this time choose a very bright skin color. Now go to the Select menu and click on Color Range. A box will popup that shows you the selected color in the photo. Move the Fuzziness bar back and forth until you find a good highlighted area (see picture for example). Click ok and the face will be covered with marching ants’ selection. At this time the selection is scattered but will fix that.
With the highlights still selected press “Q“. This is the hot key for quick mask. If you’ve noticed the color pallets have went to black and white, you'll see why shortly. The purpose of the quick mask is to show and paint your selection. Now hide all the layers but the first outline layer. You can now easily see the selected area. Click the Q button again to turn off quick mask for a second. Click on the select menu and go to modify – expand. A box will popup asking how many pixels you want to expand the selection. I picked 5. After that hit Q, the white area has expanded. If it expanded too much use the undo option and try it again.
Now the selected area looks really good except for some spots. With quick mask on and using a soft brush color the area you don’t want selected red and the area you want clear. In quick mask mode this is what the black and white pallets are for. After touching up your selection turn off quick mask and click on a layer above the first skin layer. Use the bucket tool to paint the bright skin color in the selected area.
Alright you should be done except for touchups and the background. I use the gradient tool for my background. Right click on the bucket tool to use the gradient tool. Now pick the two colors you want and click and drag the mouse on a new layer. Make shore the layer is below everything.