To make a rounded square, create something between a circle and a square. It should have noticeable sides, but the corners should be rounded.
This is similar to what you’d do if you were drawing a realistic human figure so keep basic proportions in mind. If you’re having trouble, look at a photograph of a person standing in a similar position. However, keep in mind that in cartoons, some areas may be exaggerated while others are underplayed.
Horizontal guidelines may curve upward or downward, depending on where the person is looking and the shape of their face. For instance, you may draw a horizontal guideline across their face to determine the eye and nose placement.
Close-set eyes that are tilted down toward the center with eyebrows that match can indicate anger. Big eyes that are ever-so-slightly cross-eyed can make a character seem cute and innocent. If you want a character to look surprised, try lifting the eyebrows a little higher in an arc and use wide-open eyes.
A pear shape often works well for the torso and stomach. If you want a character with lots of muscles, try an inverted pear shape.
Add in basic rounded shapes for shoes.
You can even look up tutorials on how to draw specific characters to make life easier.
Don’t forget to add shoes or feet!
Add in horizontal guidelines for the face and body. The face guidelines should curve upward or downward depending on whether the character is looking up or down. The torso and stomach guidelines should show how the area rounds itself out in 3D.
For example, some characters will have very skinny arms and legs, while others will have more defined curves.
For hair, create a flattened v-shape to indicate a part in the hair. Add curving or straight lines to make the hair, depending on the character.
Light pencil marks are important because if you draw too heavily, you’ll leave indentations in the paper.
A figure drawing class would also be helpful in learning how to draw cartoons.
You’re drawing in pencil so you can make changes throughout the picture. Plus, as you draw, you’ll be able to see the shape you want your cartoon character to take.