Hey man!

The first half the song, the beat is real good, but the melody is very empty.

I almost lost full interest in the song until the main melody came in, but not many people stick around and wait for that long to hear the main part of the song. Trust me I know, I have a tendency to do it too.

To be honest, that isyour only problem. The melody is empty. The main melody has more presence than the first, but there could still be more though. I know alot of songs who don't have alot of "tools" to make up their melodies, but theirs doesn't sound as empty as yours does. But then again, I'm a big melody fanatic so it could just be me.

Overall, a good song to build off of!

^.~
Your beat is awesome.