Started driving manual about 2 months ago, I smell clutch in reverse.

Pretty much what title says. I think ive started to get the hang of it by slipping the clutch and pressing it back in, but sometimes I accidentally put too much gas because im on a slight incline where I need to reverse, and I end up smelling the clutch. Just had the clutch replaced 500kms ago (not my fault, throw out bearing is bad on these cars) and im just wondering if ive shortened the life of my clutch by any significant amount?