New updates concept character

Learning new experience to paint concept character but I feel something was not doing perform properly. Although learning new style and colors typically. Need to spend on doing my own projects than doing unusuals stuff. I have to push my limit to archieve greater and wise more appriopate skills. I have to adept in myself have a own faith in myself and more responbility. Here's a few concept character from grayscale to color I feel something empty and does not feel this not a professional artist I have no doubt in future will be.