Hey man, that's really good!
It definitely captures the Neil Young sound really well, although I have not heard the Neil Young original on this one.
It sounds very 'live-in-studio', and not 'overproduced' at all, if you know what I mean. I like how the song opens with this mindblowing feedback, and I also like how the feedback throws accent on the lead guitar, in general. That's very authentically Neil Young, and again, you capture that essence really well.
You really capture the Neil Young essence of the vocals really well too, but ditto, the pitch warbles a bit, and could stand to be redone.
I don't know how you produced this cut, but to me, it sounds very 'live-in-studio', and that's very Neil-Youngish indeed. Just curios, but how's this cut produced, and on what equipment?
...Overall, I like this cut, and if you improved only the vocals, it would stand very well on it's own, but it might be improved even more by beefing up the production value of the rythm section. If it's 'live-in-studio', then multitrack it. If it's already multitracked, then work on the mix some more, to give the rythm section more definition and presence,... more bass-end punch and more treble-end crispness, and a little more selective panning to give each instrument it's own space.