Variable bank angle - not constant bank - is the single concept that separates passing from failing ground reference maneuvers on the private pilot checkride.
Radio Hangar explores Turns Around a Point, the Ground Reference Maneuver Where the Wind Does the Grading and Most Students Fly a Circle That Isn't One.
Master turns around a point by understanding how wind changes your groundspeed and bank angle - steepest downwind, shallowest upwind, all the way around.