In the end of the Dissections homework in the Example homework part Uncomfortable quote:

Here's an idea of what a finished page might look like. Alternatively, it might look like a steaming pile of crap, and that's totally fine as well. Just complete the required number of pages to the best of your ability. This is just the beginning.

Meaning that if have done that with your best, you try you hardest it is ok, just move on, i am having the same problem as you in the Dissections homework just keep moving forward trying your best.