a couple of problems...
For a sample job (and I'm not huge in hip-hop, but know this myself as a reference), it's choppy... that momentary pause really hurts the flow of the sample and will make it really difficult for myself and others to use it effectively in our own songs respectively. Also there is an imbalance in the way this sample goes, again thanks in part to that momentary pause. By my standards, and I'm doing this on a curve, this could be done a whole lot better. You've done a good effort though, but that pause hurts your rating some. Polish it up a little and you've got a kickass sample on your hands.
-SD-