Okay, this didn't seem to have anything going on at all. I am not a guy who's a fan of experiments on this website. It's just the same image of Godzilla jumping around over and over. I like it when people try new things, but this didn't have much going for me. It's too bad you have such a negative image of yourself.

You should leave the experimenting to your own website. I didn't see any shading or shadows in this at all. You need to have more going on. The best thing was probably how you got his roar down. Even that gets annoying after awhile.

Higher Framerate

Godzilla on a trampoline is amusing. Your animation will be much smoother if you up your frame rate. Also, try and pick out your key frames. Rotoscoping is straightforward animation, but by signifying which frames are your key frames, you will likely have an easier time next time you try. Good job.

I liked it.

You could definitely afford to up the frames-per-second and take more time with drawing each frame.

Other than that, though, this is a cute little animation.

Cute

It made me lol. Good animation. :)