That was pretty cool actually. Your vocals In particular impressed me.
Here’s some observations as an outside listener.
1) guitars sound a bit more distorted than the should.
2) time is weird. Are the drums to the grid? I dunno exactly what I’m hearing but it sounds like something is in perfect time while other elements are in and out of time.
From everything I’ve heard and read, zeppelin stuff was not righteously locked to time, but the whole band flowed in and out of time.
3) levels can be a bit off at times too.
Overall, well done, you took on something I wouldn’t be willing to touch.
You did a good job and have completed what id call a good rough mix. Maybe take a day or two or three off and come back with fresh ears.