Well, cartoon smile eyes often have shiny highlights and maybe some cute lashes. They tend to be simple yet very expressive, showing a positive emotion clearly.
Cartoon eyes could be associated with money if they are part of a popular character design that generates revenue through merchandise sales or licensing deals. For example, a cute character with unique eyes might be printed on various items and sold.
Good cartoon eyes typically have simple yet impactful designs. They might have unique lashes or highlights that draw attention. The way they're drawn can tell you a lot about the character's mood or personality at a glance. For example, friendly characters might have soft, friendly-looking eyes.
You can start by looking at some existing cartoon eyes for inspiration. Then, sketch out the basic shape and add details like lashes and highlights. Use simple lines and colors for a printable effect.