alright so...
im not a huge fan of hip-hop so this is not what i usually listen to.
let me break down a few things
1- the beginning definatly gets things going way different then i expected, it sounds like an 8-bit synth with a phaser. thats actually pretty cool, considering its hip-hop you don't hear sounds like that often
2 - at 0:30 that bassline sound you have with the phaser could use a little work, its not bad but it sounds like it clips a little bit so you might wanna try to EQ it a bit or work with changing the instrument itself.
3 - your drums were the most unexpected thing about this piece, it has a techno drum style, but a hip-hop feeling. interesting!
4 - it seems to cut out too soon, once you get the drums going it plays for a short time then fades out, you might wanna lengthen it from that part on, you basically have half a song with no drums then half with drums, might wanna make it 1/3 no drums 2/3 with drums.
i will have to be honest and say its not entierly 10 material, the music is good but the instrument quality is a little less then what it could be. ill give you a 9 :)