Below is a published example of a journal article critique.
The ones that exist do not represent exactly what your professor expects, but reading through them may help give you ideas of how to approach your assignment.
It is also important to see how published authors react and respond to each other in the scholarly realm.
The following example was found in APA PsycInfo. The direct link requires you to type in your Shark ID and password to open the full text.
Evaluating Purpose and Argument of the Article
The questions were taken from this website: https://www.uis.edu/learning-hub/writing-resources/handouts/learning-hub/how-to-review-a-journal-article