Short Porcupine Tree mix, part from anesthetize

id try to get more of the vibe that this song / album has.

yours sound very itb and flat / 2 dimensional.
especially the guitars. try a/bing your mix and try to match

1. depth (reverb/delay/room) on drums and guitars.
2. watch your presence. over equalizing your instruments makes your mix harsh
and unattractive for the ear.

>> try a voxengo curve eq of the original,
apply that to yours. youll immediately see, what exactly your problem is.
might be in the presence and also lower midrange.

hope that helps!