Black & White

Step 1

Load up your car image and select the "pen tool", draw around your car but not selecting your windows, grills, lights etc... so basically your just left with a shell. "copy and paste" to a new layer.

Step 2

With your newly pasted layer selected goto "image > adjustments > desaturate" then goto "image > adjustments > variations" use the settings below.

Step 3

To make a black car click "darker" about 2 times also marked in red on the image above. (to make your car even darker just click some more times) should have something like below.

As you can see it doesn't look very good so if we goto "image > adjustments > brightness/contrast" and adjust the lightness and contrast, the more you up your contrast the more shiny your paint becomes.

Step 4

To make a white car open up your variations panel again but click original in the top right corner to reset your layer as it was, then click "lighter" you only need to click this once.

Now goto "image > adjustments > brightness/contrast" and increase the brightness to about +20, you shouldn't need to touch the contrast unless you want to make it more shiney.

That's it.

Make a Picture more Clearly

First, Select the picture that you want to make more clearly.

This is my picture, It's not good :

1. Before do anything, for safe, we create other layer by Press CTR + j to Duplicate Layer .

2. Use Filter -> Sharpen -> Unsharp Mask. In this step, we make a picture more clear.

With parameters:

Amount : 75 %
Radius: 1.5 pixels
Threshold: 0 levels

3. Next, we use Filter -> Blur -> Surface Blur. As follow:

Radius: 10 pixels
Threshold: 10 levels

We have result of 3 steps above:

Then, we will use 4 tools of Image -> Adjustment: Brightness/Contrast , Color Balance , Levels and Curves.

4. Brightness/Contrast: with parameters

Brightness: -5
Contrast: +5

5. Color Balance:

Check Preserve Luminosity (if it is unchecked)

Select Shadows and set parameters into Color Levels: -25 -5 -7
Select Midtones and set parameters into Color Levels: -15 +11 -31
Select Highlights and set parameters into Color Levels: -5 +5 +5

6. Levels (or CTR + L)

Channels : RGB
Input Levels: 6 0.88 235
Out Levels: 0 255

7. Continue with Levels:

Channels : RGB
Input Levels: 0 1.00 255
Out Levels: 0 245

8. Curves: You set as figure :

First, with Channel: RGB

Channel: Red

Channel : Green

Channel : Blue

9. Final, we have a new picture

Coloring a Photo

At first, open the prepared photo. Convert it to PSD (Adobe Photoshop's format).

Divide the photo to layers. I divided it to: hair, clothes, eyes and (the most important!) skin. Read below how to do this.

Hair - go to 'Select-Color range' and click on the hair. Set Fuzziness to 100% and click OK.
Deselect the parts that do not belong to the hair and then Layer via Copy.

Clothes - Select it with the Polygonal Lasso Tool and then Layer via Copy.

Eyes - Choose the Lasso Tool and select it (Feather 0 px). Layer via Copy.

Skin - Carefully select it with the Pen tool. Layer via Copy, certainly.

Ok, you have done with the selections. Now let's proceed to the coloring part (the most interesting).

Download here the file with coloring settings (don't install it yet).
Select the layer named 'Skin'. Go to Image-Adjustments-Variations, click on the 'Load' button and load the file you've downloaded. Click on OK.

Select the layer with the hair. Go to Image-Adjustments-Hue/Saturation. Tick the 'Colorize' cell. I suggest you to use these settings: Hue 40, Saturation 21. After that, you can try to make it brighter using Variations.

Set the color of eyes, but don't overcolor. Desaturate the white using Sponge Tool.

Desaturate the eyebrows using Sponge Tool. Set the flow to 25%. Desaturate the nostrils.
Desaturate a little bit the beard and the moustache. Sharp all these using Sharpen Tool.

Now, we will change a little bit the skin.
Go to Hue/Saturation and set the following parameters: Hue: -2, Saturation: -18
Go to Variations and give the skin more saturation and yellow color (in Midtones section). Remember not to overcolor.

Yes, there are still some orange and brown areas. Let's reduce it. Go to 'Select-Color Range' and hit the chin shadows. Set Fuzziness to 70. (Don't select the lips). Slightly desaturate these areas using Variations or Hue/Saturation.

Select the lips and go to Variations - Midtones. Feather 1/6. One click on Red, Magenta and Cyan.

That's all.

P.S. See here how not to color your photo. Avoid these styles.

Effect Colorful (Video Tutorial)