Smooth animations with shapes and masks

Hey guys!

First off, this is my first post here..been wandering around these forums and reading up on stuff for a while but never actually posted anything. Anyway,
would like to say that this is an amazing community and just looking around on the website/forums has taught me a lot!

Now to get to my question, I was wondering if anyone has any more project files/ tutorials/ help that they're willing to share on very smooth shape ('after effects
only') animations like these: https://vimeo.com/46511798 / https://vimeo.com/42338398 /...

Also would like to share this one, similar style to the previously posted videos and the creator has decided to share the
project file in the description, learned a lot by taking that one apart and rebuilding it, I'm sure others here might enjoy taking a look: https://vimeo.com/46208759

Thanks!
Sam