If your goal is to teach your child to clean his room, break it down into three or four smaller steps. For example, making the bed, putting away clothes in the hamper or in the dresser, picking up toys, games, and books. Work on one step at a time. Once that step is mastered, move on to the next one. Re-do it right.
Nobody does a task perfectly all of the time.
Go with the child to where she made the error. Remind her of the correct action and stay with her while she does it. For instance, if your daughter left big streaks on the bathroom mirror, escort her back to the bathroom. Here's the towel and the cleaner. Stay with her while she cleans, if necessary.