For a first animation, this was really good compared to most first animations I've seen. Keep it up!

It's ...ok. THere's just not enough to it. :\

How to put sound in Flash.
-Import the sound you want to use into your library (Import to Library).
-Make a new layer to put your sounds into. Sound needs a frame all to itself; if there's another object in the frame, it won't work, so make a new layer that's only for sound. I make 1 layer for music & sounds and one for voice & sounds. I've never needed more than 2 layers, but my flashes haven't been very involved yet.
-Make a new, empty frame where you want your sound to start.
-Drag the sound clip from the library and drop it onto the stage. Now, you won't see anything on the stage, but you should see the blue sound line in the frame on your sound layer in your timeline. If it's elsewhere, then another layer was selected (you can lock all the other layers to prevent this). If it's nowhere, then something was done incorrectly.

Now, you want to do 2 things.
1. In the options in the Properties box, change the 'sync' to "Stream" instead of "Event." What this does is it plays the sound when you play the flash and stops the sound when you stop the flash. "Event" will play the entire sound clip, even if you stop the flash.
2. Your sound will only play in the frames you give it (under the Stream setting), so in your timeline and on the sound layer, click the frame where the sound is and push F5 (Insert Frame) to expand the box (frame) that has the sound until it has enough frames to play the entire sound.

Go to my most recent news post for links to tutorials that'll help. :)