Students confused about where to put their code

[MikaelCarpenter]

So a few of the students that I am mentoring have mentioned that they're not sure where they should be putting their code for the first project. The section that asks students to test on images doesn't have a clear spot to put the code.

There's two reasonable solutions:

1. Add a cell in the "Test on Images" section with a note to the student.
2. Move the cell that contains process_image up to the "Test on Images" section and have students use that.