The strumming pattern isn't accurate its just approximate e.g it may be:
E|-0-0-0-0-0---------------------------|
B|-3-3-3-3-3---------------------------|
instead of:
E|-0-0-0--------------------------------|
B|-3-3-3--------------------------------|

The strumming is fairly quick ,and it's got that picky/strummy bluegrass
feeling to it.You'll have to listen to the song to get the right strumming
pattern cause it varies slighlty throughout the song.
I've got a video of me playing it on youtube pretty much the same as ive


Tuning is in Double drop D
Capo on 2nd fret

INTRO PART
E|----------------------------------------------------------------------------|
B|----------------------------------------------------------------------------|
G|----------------------------------------------------------------------------|
D|----------------------------------------------------------------------------|
A|-5-5-5-5-5-5--3-3-3-3-3--3h5-5-3h5-5-5-5-5-5-3-3-3-2-2-2-2-2-0-----3/5-5-5--|
E|-0-0-0-0-0-0--0-0-0-0-0--0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-5-3-0---0-0--|

intro part continued cause  i ran out of room
E|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|---------------------------------------------------------------------------|
D|---------------------------------------------------------------------------|
A|-5-5--5/8-8-8-8\7-7-7-5--3-3-3-2-2-2-2--3h5-5-5-5-5-5-5-3h5-3-0------------|
E|-0-0--0-0-0-0-0-0-0-0-0--0-0-0-0-0-0-0--0-0-0-0-0-0-0-0-0-0-0-0-0-5-3-0----|

MAIN PART
main part1
E|-0---0-0--0---0-0-0-0---0-0-0---0-0-0----------------|
B|-3---3-3--3---3-3-3-3---3-3-3---3-3-3----------------|
G|-0h2-2-2--2p0-0-0-0-0---0-0-0---0-0-0----------------|
D|-0---0-0--0---0-0-2-0h2-2-2-2h4-2-0-0----------------|
A|-0---0-0--0---0-0-0-0---0-0-0---0-0-2----------------|
E|-----------------------------------------------------|

main part2
E|-0---0-0-0---0-0-0-0---0-0----------------------------|
B|-3---3-3-3---3-3-3-3---3-3----------------------------|
G|-0h2-2-2-2p0-0-0-0-0---0-0----------------------------|
D|-0---0-0-0---0-0-2-2h4-2-2---------------2p0----------|
A|-0---0-0-0---0-0-0-0---0-0-4-2-4-5-0h2p0-----2p0------|
E|---------------------------0-0-0-0--------------------|

then repeat main part1.
and then it goes:
E|-0---0-0-0---0-0-0-0---0-0-----------------------------------------0-0--|
B|-3---3-3-3---3-3-3-3---3-3-----------------------------------------3-3--|
G|-0h2-2-2-2p0-0-0-0-0---0-0-----------------------------------------2-2--|
D|-0---0-0-0---0-0-2-2h4-2-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-----------0-0--|
A|-0---0-0-0---0-0-0-0---0-0-4-2-2-2-2-2-2h4-4-4-4-4-2-2-2----------------|
E|---------------------------0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-3b(1/4)-0------|

continue with this
E|-------------------0-------------------------------------------|
B|-------------------3-------------------------------------------|
G|-------------------2-X7approx----------------------------------|
D|-0-0-0-0-----------0----------0-0-0-0--------------------------|
A|-4-2-2-2----------------------4-2-2-2-/8-8-8-8-7x-5x-3b(1/4)---|
E|-0-0-0-0-3b(1/4)-0------------0-0-0-0-/8-8-8-8-7x-5x-3b(1/4)---|
                                                 ^
                                                 quick mute after 7 and 5
then it goes into this quick little PICKING PART
(in this part you can strum more of the open strings
 on the DAD strings while your playing the notes to make it sound more like two guitars)
E|---------------------------------------------------|
B|---------------------------------------------------|
G|---------------------------------------------------|
D|--------------3h4-----------3---3-5/7-5-3-0--------|
A|---5p0--3p0-------5-3-3-3h5---5--------------------|
E|-0----0-----0-----0-0-0-0-0------------------------|

E|----------------------------------------------------|
B|----------------------------------------------------|
G|----------------------------------------------------|
D|---------------3h4-----------3---3------------------|
A|---5p0---3p0-------5-3-3-3h5---5--------------------|
E|-0-----0-----0-----0-0-0-0-0-------0-3-5-3-0--------|
repeat the PICKING PART  then play the MAIN PART again then the PICKING PART .....

When you get to the end of the PICKING PART on the 2nd time round and your
about to play the MAIN PART ,instead of playing:
E|-0-3-5-3-0-------------|
B|-----------------------|
play:
E|-5-3-0-------------|
B|-------------------|
cause it flows into the MAIN PART better