One way to achieve better results is to pay attention to the timer. In addition to that, the brush head should be positioned against the gum line at a 45-degree angle. This will allow the cleaning of both the gums and the teeth.
Remember to be gentle. If your electric toothbrush has a pressure sensor, you may have some help getting this right. Lastly, a pea-sized amount of toothpaste is enough for the job.