Well, with pencils and paper I can't really draw very good. But with a computer you can easily change mistakes.
I used Photoshop for this character, I used another character I liked as a sort of template, to see how big the character should be etc.
I just drew over that character, and then changed it pixel by pixel until he didn't look too weird anymore.
It helps a lot to use other characters you like as reference material. First simply changing colours, then making them thinner, fatter., changing clothes etc. You can learn a lot from that.
I used Photoshop for this character, I used another character I liked as a sort of template, to see how big the character should be etc.
I just drew over that character, and then changed it pixel by pixel until he didn't look too weird anymore.

It helps a lot to use other characters you like as reference material. First simply changing colours, then making them thinner, fatter., changing clothes etc. You can learn a lot from that.