1. Choose an old photograph.
Scan and open in Photoshop.
2. Create a new layer via copy.
You will then have two layers of the same photo.
3.Click on the top layer to indicate that this is the layer you are working on.
4. Then choose "layers" from the layer palette and scroll down to "color".
5. Choose a tint color by clicking on the "foreground color" on the tool bar to your left.
The color picker will pop up. Choose a color to work with by selecting it with your cursor.
6. Click on the brush tool on the tool bar. Choose a brush size above in the menu bar.
I chose a 21 pixel feathered brush. Feathered brushes are softer.
7.Begin to "paint" the photo.Erase any mistakes as you go along with your eraser tool.
8. Change colors as you work. Play with the Opacity and Flow options of your brush.
You can always "undo" anything you don't like. The option is under "Edit" in your menu bar above. You can repeat it to backtrack many times. (set the number of times in preferences.)
9.When you are happy with the color slide the opacity down to create a more subtle look.
10. Flatten the image to merge your layers into one document. You may be done at this point. But if you'd like a warmer look, go on.
11. Choose Image from the menu bar, scroll down to Adjustments and then Photo Filter.
12.Choose the warming filter and hit okay.
The finished image. You can add noise in the Photoshop filters if you want it to look a little older. This is especially useful if you've started with a modern b&w photo that you'd like to age.