As a user, when clicking on the Test step field, it gets editable, also when clicking on an image, it is opened in a bigger size.

As a user, when clicking on the Test step field, it gets editable, also when clicking on an image, it is opened in a bigger size. Because it is expected when clicking on a small image to see it in a big size

Another possible improvement could be: 

Give a choice in settings, if steps are editable by clicking on the step’s field, or by clicking the edit icon on the right side of the step.