Go to [https://lucid.app/](https://lucid.app/) 

Click the "Create Diagram" button in the top right corner.

Select the shape you want to add to your diagram from the left-hand side of the page.

Click and drag the shape onto the canvas.

lucid.app

If you are creating a diagram in Lucidchart, you may want to add a shape style to a layer in your diagram to make it look more professional and organized. By adding a shape style, you can easily differentiate between different elements in your diagram and make it easier to read. Additionally, you can customize the shape style to match the overall look and feel of your diagram. Knowing how to add a shape style to a layer in your diagram in Lucidchart can help you create a more visually appealing and organized diagram.