You may first wish to use an analog clock that has a clock face to teach the concept of time. This can help your little one picture the time on the clock face. She can see the second-hand sweep around the face of the clock to get a sense of how the clock works and how the other hands move while moving more slowly. Your child can see time advancing in one direction. This helps develop the concepts that are more abstract. Time is abstract. So are special images.
Another thing you can do is time for her activities. Show her how long it took her to brush her teeth or eat her lunch. Use the alarm to help her know when the activity is over. When your child masters telling time on the clock face, you can teach her the digital clock.