Ouch
What exp-99 meant was cut up the sample and give it some motion with drops and chops. Unoriginal? Not by a long shot. It's rare to find anyone sampling alternative music for hip-hop. Repetitive? Last time I heard Nu-Metal or Hard Rock, it was the same 3 or 4 chord progressions...now that's repeitive. Don't sweat this. Learn from it.
Use instrumental motion to give it an edge. Put a fat pad in to delineate bars and give it progression. Use a strummed bass as an interchange when you drop the loop out of the background, then transition back to the loops for a big finale with a developing chop like the one you opened the track with.
Keep it up.
Peace