Let's take a look and try out some digital software called Photopea. Open the website photopea.com and create a new project.

To create a new project in Photopea, open the website photopea.com and:

1. Click the New Project button
2. You can give your project a name and choose what size the image will be.
3. Click the "Create" button.

When creating a complex illustration, it's important to have a clear theme in mind. This can help guide your decisions when it comes to choosing colors, shapes, and styles. When selecting a theme, consider what message you want to convey or what story you want to tell. Think about what kind of mood you want to create and what elements will help bring your illustration to life.

Choosing the right color palette can make or break your illustration. A well-chosen color palette can help create a sense of unity and harmony in your work, while a poorly chosen palette can make your illustration look chaotic or disjointed. When selecting a color palette, consider the theme of your illustration, the mood you want to convey, and any other specific requirements you may have. You can also use color theory to help guide your choices.

Once you have your theme and color palette in mind, it's time to start creating your illustration. Using the shape tool is a great way to create basic shapes quickly and easily. Start by creating a new layer and selecting the shape tool from the toolbar. From there, you can choose from a variety of shapes, including rectangles, circles, and polygons. Use the shape tool to create the basic shapes you need to build your composition. Remember to adjust the size, position, and rotation of each shape to create a pleasing composition.