Not bad! Not bad at all!
This is actually very good, especially seeing how you're new to FL. Very good job! The only thing I found that bugged me at all was the fact that a fair amount of the audio was clipping (that's what it's called when the song starts distorting). The best way to eliminate this is to use what is called the Fruity Compressor. Just pop one into a channel, link the sound you want it to affect, and turn the Gain down to a number in the -5 -9 range, then turn the main volume for the sound up 'till it sounds as loud as you want it to be. There are better ways to use a compressor, but (despite all of the experience I've had with it) I'm still learning how to use some of the better effects/what different knobs do. I also reccomend adding a compressor to the Main effect slot, and using that to affect the song's main volume. Trust me, the compressor will become one of your best friends in the course of you music making. Aside from all that, it's an awesome song. Keep mixing, and don't give up! You've got some serious skill man!
-Manmademusic