Prepare beforehand by keeping an empty can of the original paint in a safe place in your basement or garage. This way, you can refer to it when you go to purchase paint for the touch-up job. Most touch-up jobs will require a small amount of paint so buy only enough for the job at hand.
Touch-up paint jobs require small brushes. Buy a couple of sizes of brushes based on the size of the spots that need to be painted.
Remove all of the handles and drawer pulls that may get paint on them during the touch-up job. Apply tape to create borders and put down old sheets to make sure that paint does not get on the floor.
Apply a coat of primer to the spots that need to be touched up. It is also recommended to apply more than one coat of paint to the spots. Be generous with the amount of paint that you apply to these spots.
Depending on the size of the kitchen and the number of spots that need to be touched up, the job make take from an hour to a half day. Remember to leave time for the paint to dry, which depends on the type of paint and the surface that you are painting.