Getting a good start off the diving board is extremely critical at the beginning of a race.
As you will see in the video there are a few things you need to focus on before and during the dive. The placement of your feet and your stance on the diving board is critical. You need to know the difference between a grab start and a track start, and which one works better for you.
The angle that you enter the water is critical as well. Take a look at this video to see what a perfect starting dive looks like and how to do it yourself.