I was working on a quiz and it was quite long. The next question button and the submit quiz button look very similar. They are also right next to each other. The quiz didn't prompt me to say that I finished all the questions and accidentally clicked the submit button instead of the next question button, before I was done with the quiz. The quiz had no time-deadline, so the issue was not that I didn't use my time wisely.

Would you consider creating a verification question asking students if they are finished with their quiz/exam before submitting? Would you also consider changing the UI of the submit button and next question button so that they are not so close together, and visually look different?

Thank you!