Hi there,
You can make this animation in 2 ways, the first way is drawing each frame (easy), and the second way is rendering it with a cartoonish shader (can tweak it later). I personally recommend using a cartoonish shader, since you can have the final file yourself, and tweak it if needed.
I have 8 years of experience in 3d modeling, texturing, rendering, and animation.
So rest assured that I have done many projects similar to yours, and your project will be in good hands.
Hope to hear from you soon.