My only criticism of this really is the vocals. You really gotta capture the absolute sorrow and despair in Cobain's voice to nail this song's vibe.
Fender MIM Strat HSS (DiMarzio Crunch Lab)
Peavey 6505+ 112

If you want, I can mix/master your tracks for free just so I can practice and who knows, maybe you'll love what you hear! Hit me up.