Portfolio Critique - 3D

I was hoping to get some critique on my progress over the last new years and and advice on how to further improve my skills. Below is a sort of timeline of some of my models going back to when I started in 2014ish. I work full-time in a non-art related field but have always
loved game art and possibly working as a freelance artist on the side
when my skills get there. Critique is always welcome!

Sometime in 2014, first "real" attempt at my own character concept:

Early 2015

2015 - First attempt at textures, only photoshop

Mid - Late 2015

Polycount Challenge November 2016

October 2017

November 2017

Polycount Challenge November 2017 - First try at Handpainted

Sometime from January 2018 - July 2018 for these next few

And
for present day! I am working on the Art War 3 Contest on Cubebrush.
Submission is this Sunday so I have a few days to finish up texturing,
posing, and renders.
Here are some high poly sculpts above and my current experimentation with colours!

As always I welcome and appreciate critique!

Working on a new character and going to try and focus on my desire
to create stylized characters moving forward. I'm trying to go for a
semi-stylized look in the likeness of Overwatch.
My
next character is going to be based on a world I'm creating. The idea
is that I come up with a backstory to a race of humans that are far and
beyond what normal humans are capable of. They aren't god tier but are
faster, smarter, and stronger then average humans. They eventually get
exiled and flee the "normal" human cities and create their own kingdom
on an island off the main continent. This is where I will try and create
a living island in Unreal Engine.
This first
model will be the average soldier, and from here I intended to create
multiple hair styles, heads, and clothing pieces.
So
far I have the anatomy done and am redoing the hair. Then I'll start
concepting different styles of armour for the standard soldier, I'm
thinking of a sharp "elvish" design with realistic armour pieces in how
they connect and function.

Critique is always welcome!