After takeoff, it is best to stay above the runway and not drift to one side. Many students have trouble with this and the skill builds with experience.
You can’t see the runway below you without looking straight down, and depending on the plane you may not be able to see it at all. But there is a trick that can help.
After takeoff ( or maybe right before takeoff), look about a mile away and find a prominent building or landmark. Then look above it and find another one. These two landmarks will be your gunsight. As you climb, make sure that you gunsight stays lined up vertically. Just picture a straight line coming across both points and make sure your airplane is on that straight line. Don’t overthink it!
That’s it for this one, just a simple trick!