Images and assets
Images wait in the Assets tab, beside Layers. Put one on the canvas as often as you like: the file is kept once in the project, and the export embeds it.
Step by step
Open Assets
Click Assets above the Layers panel. Your images and SVG files are here; Add files brings in more, and so does dropping files on this tab.
Place the picture
Click the sunset: it goes in the middle of the canvas, as an image layer. Drag it to the canvas instead to drop it where you let go.
Size it
In the Image section of the inspector, type 240 in Size W and press Enter: the height follows, as an image keeps its proportions. Original size takes it back to its own pixels.
Move it into place
Drag the picture into the frame. An image moves, scales, turns and fades like any other layer, and animates the same way.
Keys
| Ctrl I | Import files |
| Ctrl V | Paste |