You really captured the style and vibe of the original, which is good for me because I love the Pixies and hearing bad covers of bands and songs I like fucking sucks.
So the mix needs a little work to me. The snare is kind of boxy. Great drumming by whoever did it, but get that snare a little flatter. The guitars are great, sound great, but if I'm comparing them to the original they need to be a little dirtier and less bright. A little more room on the guitars. The vocals must be a fucking bitch for this song, and it sounds that way. They sound like this key is like one step above the range of whoever sang it. I know the vocals are shouty and strained by design, but I can't help comparing it to the original and Mr Black set the bar for you to reach. The entire mix needs something holding it together a little better. EQ, compression, reverb, whatever it takes. I like clarity and isolation, but again, if I'm comparing it to the original, they sound like a band in a room. This doesn't.
Getting my ass back out of here,
Greg