In Illustrator, you can create a range of different shapes and designs. You can also create borders, titles, and other elements to help show the edges of your illustrations. Here are a few tips to help you get started:

  1. Choose a shape that is easy to understand and use. For example, choose a circle or triangle for your basic shapes.
  2. Use lines to define the edges of your shapes.
  3. Use lines to indicate the size of your shapes. For example, use smaller lines to indicate smaller sizes or larger lines to indicate larger sizes.