Here's how to take a screenshot without pressing the screenshot button.

1. Arrange the screen as you like.
2. (Optional) Minimize the Create Tutorial dialog.
3. Press the Prnt Scrn button. This causes a screenshot to be placed in the Windows Clipboard.
4. Restore the Create Tutorial dialog (if it was minimized)
5. Press the Screenshot icon. This will save the screenshot that is in the clipboard, instead of taking a new one.