r u using frame to frame animation style?

u can do it by keyframing

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tweening = extra frames/animation between two keyframes which make the animation look more smooth/ natural (dunno how to explain)

just like film, film is in motion, but actually is still picture frame but it moves so fast, (normally is 24 frame per second) until it tricked our eye.

just like play game, if graphic card sucks and u play high requirement games, wat u see is slow moving pictures (like slideshow lol), but if using high end graphic cards, u will getting smooth frames like water (coz higher fps mah)

omg my explaination... , hope u understand