In Illustrator, you can create custom shapes by using the Pen tool, the Rectangular Marquee Tool, or the Ellipse Tool. To create a custom shape, start by drawing a basic shape using one of the aforementioned tools. You can then use the Properties bar at the bottom of the Illustrator window to customize the shape.
For example, you can change the size, the shape, or the color of the shape. You can also add text or other graphics to the shape using the Drawing Tools panel.
When you’re finished customizing the shape, you can save it as a custom file type (such as a .ai or .eps file) and use it in your projects. Alternatively, you can use the Shape Builder tool to create a custom shape from scratch.
The Shape Builder tool lets you create custom shapes by dragging and dropping different shapes onto a Canvas. When you’re finished, you can save the custom shape as a .eps file.
Remember that you can also use the Pathfinder panel to merge different shapes into one custom shape. The Pathfinder panel lets you combine different shapes so that they form a single, custom shape.