This is me in my seventh week (inspired by De'Von Stubblefieldem). Here the purpose was animate a character with a tail. Although the concept of overlap has been presented in week 6, knotted in my head when involved arcs and respect the character rig. Different from the pendulum, here there is much more personality to transpire. Also, we learn to animate in layers!

"Wait a second... Layers? Are you saying that is like photoshop?"

Okay, let's talk about it first.Well, do you remember that one way to animate the effect of an overlap is to animate part by part? Basically that. Overlap is about a single member. Layers are used to animate parts of the body separately.
To better understanding, know that there are some ways to make an animation. Let's talk about them.

Straight Ahead  as it is called when you start doing your poses frame by frame, sequenced behind each other. This will give a natural flow, you will know improvise and your scene will become a box of suprises. You can see the advantage or disadvantage asthey often do things that you did not expect, and do things beyond what it should. Remember: you usually have a pre-determined time for each scene, andwith this method you can easily blow.

To avoid these problems, there is a method called Pose to Pose. Here you decide the most important poses of your character - your keyframes. Then their breakdowns, and finally their inbetweens! This will give a clear and calculated scene. But you can lose the fluidity of your animation...

The third is a Fusion of the previous. Planning your scene, do a lot of thumbnails and try to find your keyframes on that. Dont run away from the center of interest. Put anticipations and other things. Work with your straight ahead based on this. If something is wrong, change your keys or replace them. You will see the importance of planning more than ever.

Try everything. Just Keep it Simple and find the method that will best fits you!
Layer animation is more or less it on this assignment: First animate the ball. When it is working good, we animate the tail!
Reminding the Wave Principle, the tail will behave more or less like this:
When the Primary Force is moving, the tail will follow the arc in different orders, one joint at time, giving the effect of Overlap. For a good overlap, ensure a good dragging motion.

Below is my assignment of this week. See ya!