set each time in each window.
The first should be large to there is a pause in the animation.

frame 2 and 3 around 25 and the last frame the same as the first.

file save.

Click on customize

Partial transparency. Try to set the background color as close as you can to the
the background color you are going to use most. I mostly use white.

then next

and next

and next

now you have an opening egg.
What will you have popping out of the egg?
Check my Designer Tag tuts to see how to add something to pop out.

I hope you enjoyed this tutorial!