Motion design is complex and requires a lot of little details to make it look right. Below, you can see many of the key concepts in animation on display that you can use to improve your work.
— Jorge Canedo Estrada (@jrcanest) October 18, 2016
The GIF, from animation educator Jorge R. Canedo, demonstrates several concepts that you might not notice immediately, but that lend credence and believability to animations. For example, how you make something bounce can give it weight. Laying multiple types of animations on top of an object can give it a more coherent look.
If you want to learn more about the specifics, Canedo has a motion design course you can check out, though its price starts at $US65 ($85). Regardless, seeing the principles in action can help you decipher some of the animations you see in designs every day.