No worries :-) I'm actually quite fresh in making artwork for games. I have a little experience with Godot and UE5 as I've checked them both. The latter didn't gave me that good vibes like the first one.
Actually thanks to that I checked these engines I found out making artwork is most pleasing part for me about making games. So, here I am. I've already watched ton of different stuff about pixel art and overall art. Some were paid other were free. None of them really told the whole picture. Now thanks to your feedback I feel like I can really move forward.
I am currently working on an update and I will use proposed dimensions. One thing I would like to get clarification on. What do You find better? Upper body be centered in box and lower body be aligned with bottom of the box. OR. All of sprites be centered in their designated boxes. OR some other way of alignment.