Quickest way to improvement? Practice. It’s a simple bit of advice that rings with absolute truth. Articles, tips, mentors, and study will never get you as far as rolling up your sleeves and getting down to work, be it animation or any other skill.
adapted from animator island:
Level 3 Exercises
-Close up of open hand closing into fist
-Close up of hand picking up a small object
-Character lifting a heavy object (with purpose!)
-Overlapping action (puffy hair, floppy ears, tail)
-Hammering a nail
-Stirring a soup pot and tasting from a spoon
-Character blowing up a balloon
-Character juggling (loop)
-Scared character peering around a corner
-Zipping up a jacket
-Licking and sealing an envelope
-Standing up (from the ground)
-Pressing an elevator button and waiting for it
This video describes how to create simple animations in Photoshop CS4.
Do your best.
There is no reason to do these exercises poorly.
Give it your all.
You owe it to yourself to try your very best.
Something not quite right? Take the time to fix it.