MobKiller Animations

Considering I have a minute over 20 minutes long of me not completeing something might be saying something. And that same thing being from 2014-2015

If I remember right, I think  you're a great animator!  

Study animation. Here's some books you might find useful, and that I would personally recommend.

Also just keep practicing, but practice correctly. Try to figure out what you could improve in every single one of your animations, try other styles of animation, mimic real life movement in your animations, study other great animations and animators.

But probably the most important part about practicing is to challenge yourself with something hard every time you practice. This is probably the most important part of growing your skill as an animator. Animating difficult things is what expands your animating part of your brain and it's what really improves your skill. Think of it like this, if a weight lifter were to only bench press 100 pounds everyday then would he improve? Obviously no, body builders always increase the amount of weight they lift because eventually their muscles get stronger and the weight they're currently lifting would be too light for them and their progress would plateau. So they challenge their muscles every time they go to the gym to become bigger and stronger. Animating is the same. After you feel pretty comfortable with animating a particular thing, then try animating something else that's more challenging. Try more complex character movements, or try animating that one thing that you've always sort of avoided because you know you just can't do it. If you do that then you will start improving at a very fast rate.

I hope this helped you, and good luck trying to become a better Mine-Imator animator.