The secrets to good Pixel Art animation! (Animation tutorial)

Poured my heart and soul into this one, lads. Every scene drawn by hand. Hope you enjoy :)

I stand on the shoulders of giants. Here are some incredible videos that this video learns from:
AdamCYounis' Sub-pixel animation: https://www.youtube.com/watch?v=cs1Gp61yafQ
MortMort's Animation planning: https://www.youtube.com/watch?v=MmNLPtIsMxI
​Saultoons' Axe animation: https://www.youtube.com/watch?v=iWvfaiiVuDI

~Chapters~
(0:00) Intro
(0:50) Timing
(1:43) Planning
(3:30) Movement