Remember that you cannot help your student with the Create Task. It is the only way to make the Create Task fair. If we were allowed to help our students then the students’ performance would be based on the teacher’s abilities and not the students.
From AP Computer Science Principles Student Handouts V.1 page 14
The very best thing you can do is show your class the video here AP CSP Create Task Walkthrough. One of the more important takeaways is that there is both a lower and upper limit to the complexity of the app built. Going beyond that doesn’t help. In my opinion, it probably hinders because isolating your list and algorithm becomes difficult.