Falling Snow (intro) Tab

Well i couldnt find this tab anywhere else on the web but i found a guy playing it on
when i asked him for a tab i never got a responce but i could figure out a few parts by
and by looking whereabout on the fretboard he was playing. (yeh im kinda new at this so 
cant do it only by ear yet)
the notes are perfect but the rythm may be a little off, but once you listen to the song
rythm shouldnt be too hard.

|-----------------------------------------------------------------------|
|------------------------------18-----15--15--15--15-15--15--15--15-----|
|15--1515--1515--15--15--15--15--15-12--12--12--12-----14--14--14--14---|
|--12----12----12--12--12--12-------------------------------------------|
|-----------------------------------------------------------------------|
|-----------------------------------------------------------------------|

Reapeat that four times
in the 5th repeat its got an extension too it
where it does the initial 15-12 riff 3 times before hitting 18
but instead of going up a string after hitting the 18th it continues the first part of
riff for a moment before doing this

|-------------------|
|-------------------|
|-15-14-12-14^^-----|
|-------------------|
|-------------------|
|-------------------|

please rate!