How do you delay cummnig?

Practice and self control. Stop what you are doing or slow down. One thing that does work is before you get past the point of no return, squeeze the base of the penis on the underneath side fairly firmly for a few seconds. This blocks the nerve impulses to the brain and should delay climax. You should loose a little firmness, but it comes right back. Doing this repeatedly helps train your body and should increase staying power. There are desensitizing creams available that might help. Less stimulation, longer time.