To draw your own cartoon character, the first thing you need to do is get pens and paper. I use a soft pencil (B, B2, B3) for the preliminary drawing. To set my lines, I either use a black pen or a black marker. It is best to use thick paper so that the pens won't push through.
When you have the pens together, let's start drawing the first head shapes with the pencil. Use balls, cones, cubes and cylinders to achieve exciting head shapes.
The next step is to draw eyes, ears, nose, mouth and hair in the sketch.
The next step is to outline the pencil lines with a black pen. Be careful that you can no longer recognize the geometric bodies afterwards. Then you erase the pencil lines.
The last step is to paint the head. I use markers for this because they create a color transition. Wooden pencils work too, of course. Make sure that you alternate the colors so that your picture is colorful.
Here I have another variant of drawing a cartoon character, which is a lot faster to learn and to draw.
Here are a few more videos from me on the subject.