I like that scene, I can imagine a dragon flying over breathing out fire.

I agree with Pauljs75 about Short Clips, There are too many 3 second clips on youtube.

What I do with my clips and although the animations themselves 4-10 seconds,  I loop them inside the video editor so at least they loop 4-5 times.  Gives the viewer a chance to look at everything.

With the 3 second clips, you press the Play Button and boom the clip is over.  If looped a bit longer gives the eye to absorb more.