Others would, with the same experiment, trumpet the magnificence with which the conventional theory predicted the experimental results. The style you choose depends on what you expected to see and your own personal taste. Your analysis should also describe difficulties and shortcomings that you encountered during your experiment. You must suggest experimental redesigns to eliminate and overcome these troubles. Now note that there is a subtle point here.
Some uncertainties come about because of limitations in our measuring apparatus.
A meter stick can only give you length measurements to about a millimeter or so, no matter how skillfully you use it. We can only repeat measurements so many times in order to determine the best average value. Other kinds of uncertainties come about because we are not able to completely eliminate external influences. For example, we use an airtrack for the glider because we want to eliminate friction, but we can't eliminate air resistance. The same flag which reflects ultrasonic pulses so well also makes a good parachute for our glider.