For the tutorial submission in the future, we don't need any personal modifications yet, we'll just be looking for a description of what you plan to modify for the final submission. For Thursday's submission of the final build, make sure to include three significant modifications. This could be something like adding new levels with new layouts, but they should be noticeably different from each other. Make sure that the buttons on the win screen and pause screen and such all lead to the levels/scenes that they're supposed to, as well.