Well...
As an artist, I noticed something... maybe useful...
For me... When I designed my OCs, they had features and aura that's completely different from now!
Actually,... Now is better, fortunately...
And I am happy that I have never drawn my comic, yet!
But, the important thing that should be taken under consideration is not to change too much features, looks, aura or skin tones after launching the comic... Even if we can develop the OC's design or our ability became more developed...
Just ... Pick your style... Draw the same character in each panel... And it's the hardest deal... Then we can develop the art... Like the anatomy, facial expressions...but, not the character design itself....
This was my friend's advice for me... And ... Yeah! 
I completely agree! 
