the rendering stands out, really got work. These characters look good , they have this constant integrity and that makes them look finished and unified. The designs are also interesting.
Now in order to not leave with only saying the good stuff , maybe if you liked the way you worked on this, its time to test the workflow in more things. For example, what happens if you follow the same workflow for environments [you have tried it? then in more complex environments?] what happens if you use it in more complex random character designs?. Anyway what i mean is if you feel you are in the edge, go a little further to wake up the new challenges to improve more .
Keep up the great work, this rendering skills will always aid you in battle, well acquired.