If you wanna resize the preloader (the thing that "loads stuff", the "loading" part) And keep the same look just with a bigger/smaller size, you should press and hold the shift key and then resize it with the transformation tool (is that what it call?).
Maybe you should say that you need constructive criticism and you're new to flash in your author comments. Because some people are just... *sigh*
You should go look some tutorials on how to use Flash. Or how to design/draw in flash. How to make effects, etc.
I just noticed that you use low frame rates that makes it look like laggy. You were probably using 12fps which is the "default" frame rates, right? If you don't get what I was saying, like I said before go find some useful tutorials. (Yeah, go find some tutorials. That's the best review I can give. Well, I mean you need a lot of things to learn)
I recommend you start animating with stick figures. I started animating with stick figures fighting at each other. Heh. You can find tutorials on making that kind of animation in stickpage.com at the forum. It has... well... some useful tutorials. If you don't like fighting anims, well you still should go find it because it tells you how to make like "smooth" animations instead of "rough" or stiff animation.
Another tutorial you can find is Terkoiz in Youtube. Terkoiz posted a lot of tutorials in youtube. Not sure if it's good for new flash users like you though. But I hope you'll know more about animating and be good at it.
Yeah, that's all I can say. Find tutorials... Because there's a lot of things you need to learn. Well, if you really wanna be good at animating. If you ask me how long I've been animating, I've actually been animating for like... 5 years but on and off. I started animating on Pivot first then I found Flash.
So yeah. I hope you'll be good at animating. I give you 2.5 stars.