Now that you have added some test pictures to your animations wouldn't you like to run them as an animation?
Stopmotion allows you to preview your animation before exporting it. This can be done through the play panel.(K)) and stop () the running of the animation. You can also move between frames ( (J), (L)) and scenes ( (I), (O)) as well as changing the speed of the animation preview(frames per second).
The camera has to be off to use this menu.