The third assignment is to draw an imaginary animal. If you are confused on how to start, try combining two different animals you already know about.
The first resource I have is the Georgia Aquarium. They have live webcams during daytime hours of many of their animals. You can look at the camera streams and draw from observations. Here is a link for one of their cameras. The other cameras are located at the bottom of the page if you want to see a different animal.
Georgia Aquarium Webcam - Southern Sea Otter
If you would like some more traditonal visual aids to help you draw here are some pictures that show you step by step how to draw a Unicorn, a Pegasus, and a Dragon
If you decide to give your animal or dragon scales, the older students have drawn Koi Fish and already know the secret to drawing great scales on fish, mermaids and lizards. You can use that technique to improve your drawing.