One of the most common beginner mistakes is to restrict your viewing angles to only the front or the profile, which leads to a very "flat" looking drawing style.
This is where primitives can make a huge difference. Even a simple cube can act as a super helpful guide for drawing your character in perspective, which can really bring your drawings to life.
PRO TIP 1: Learn to draw simple forms in perspective and use them as guides for your actual characters and objects.