TIM_M_91 -3 Junior Poster in Training

Hi guys well I am trying to create a UML diagram and what I want to know is am I doing it correctly so far?

First of I have a main class called 'Class1' which has two buttons 1 for 'class 2' and the other for 'Class 3'. So have I correctly shown this in the diagram if not what have I done wrong or havn't done?

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