Press Command and + (macOS) or Ctrl and + (Windows) several times to zoom in to the
artwork.
Press the Shift key, and click to select the artwork labeled “EARTH” to the right of the
selected artwork.
With the artwork selected, choose Window > Asset Export to open the Asset Export panel.
The Asset Export panel is where you can save content for export now or later. It can work in
conjunction with the Export For Screens dialog box to set export options for the selected
assets, as you’ll see.