One often overlooked, yet incredibly important aspect of motion design is the use of sound. A lot of times it's tempting to drop a quick stock music track behind a piece and call it a day, but as motion designers we should try to be aware of the role that sound plays in the viewers' interpretation of an animation. We should also try to focus on the interplay between visuals and audio, as the combination of fantastic visuals seamlessly interwoven with great sound design can be far more impactful than either element on its own.
I plan on diving into this subject much deeper down the road as I continue to learn, but for now I want to share a resource for sound effects specifically geared toward motion designers: motionsound.io. I've purchased all that Motion Sound has to offer and can absolutely attest to the quality of their libraries. Take a look if you are interested in expanding your toolkit!
Until next time!