Also make the frames per second a lil bit alot about 6 or 7 frames per second to look good.

I can help u, when ur drawing, u see a "still,once,loop" box, right? U made it still, so it wont move or do a single thing, if u press once, it will let the animation work only 1 time, if u press loop, it will make the animation last forever. Hope this helped you!