Here is my class project. I almost decided not to post one since I don't know how to draw and didn't know that was a class requirement...
Instead I decided to give the class project a go using a digital version. I used custom shapes in Photoshop. Hope this is okay. I really enjoyed the class and was inspired by your drawing ability. Unfortunately drawing is not one of my skills - but I'm okay with that. I LOVE creating digital art. (It's funny though - my grandmother and my mother's sister are both extremely accomplished painters.)
Step 1 - Here is the pattern I created in Photoshop using custom shapes.
Step 2 - Here's my pattern - which I "cut" and flipped horizontally and vertically - as demonstrated in the class.
Step 3 - Here is the pattern with four of the project files in step 2 - to the page.