Maybe it's to make the character stand out or give it a unique look.
Maybe it's a way for the creator to give the nerd a distinctive and memorable look. Not all characters are meant to be conventionally attractive.
Maybe it's for a comical effect or to make the character stand out visually.
The big black nose in the cartoon might be a way to draw attention and create a memorable image. It could also play into the overall theme or style of the cartoon.
It could be a nerdy or intellectual character. Big noses and glasses are sometimes used to give that impression.
It could be a comical or caricatured character. Maybe a funny old man or a mischievous clown.
Maybe it's to make him stand out or give him a unique look.
It could be a funny and unique character. Maybe they have a bold and lively personality.
Such a character might be portrayed as a villain or a rough and tough anti-hero. Their appearance could suggest a menacing or intimidating presence.
In the classic cartoon, Popeye, Bluto has a noticeably big nose. It's part of his unique appearance.
Start with the basic shape of a nose, make it larger and exaggerate the features. Add details like nostrils and shading to make it look more realistic or cartoony depending on your style.