KEYFRAMES are very important for predictable effects.
please watch the following video tutorials on how to apply them.
Adobe Premiere Pro: CS5 keyframing tutorial= http://www.youtube.com/watch?v=n3S1UA8UJ6s&feature=related
TUTORIAL: How to use Keyframes - Adobe Premiere Pro CS3 - http://www.youtube.com/watch?v=iaSbsmN7okI
Adobe Premiere Pro - Transitions & Keyframes (tutorial) = http://www.youtube.com/watch?v=C1f5bsCXoC0&feature=results_video&playnext=1&list=PL07E7B73788594CED
