A new update for the Paint app is now rolling out to Windows Insiders in the Canary and Dev channels (version 11.2308.18.0 or higher). With this update, the classic Windows app gains support for layers and transparency.
Layers allow you to stack shapes, text, and other image objects on top of each other. To get started, you can click on the new ‘Layers’ button in the toolbar, which opens a panel on the side of the canvas. There, you can add new layers to the canvas and change the order of the layers.
Transparency support is also included, including the ability to open and save transparent PNG files. When working on an individual layer, you will see a checkered pattern on the canvas, indicating the parts of the image that are transparent.