Keep at it dude.

Guessing you're new to this?

Thing to do next time round:
- use a few more notes in your melody
- layer your melody with a few other instruments
- add a bass synth and copy the notes to that too

Try to aim for 3 or more instruments if you want to hip hop.

Even a piano piece will usually have a:
Drumkit
Piano
Bass or Bass Synth

Hope this helps