Penny For Your Thoughts

This is a solo acoustic song with no singing.
It is really fun to play and I highly recommend it (tune to open G). Corrections are welcome.
Notes: Open G tuning (DGDGBD)

[start]
                                                          3x
D||---12p9p0---------------------|------------------------||
B||------------------------------|--0h---1p-0/-3---1-----||
G||*---------0--0----------------|--0-------0-------0----*||
D||*------------0----------------|--0----2p-0/-4---2----*||
G||-------------0----------------|--0---------------------||
D||------------------------------|------------------------||
repeat phrase above 3x then advance to I, II, III, or IV
[I]
open G (000000) then harmonics on the 7th fret then harmonics on the 12th fret.
(repeat from start but advance to [II] below)


[II] and [III]
----------------------------|
--0--1--3--5--7--8--10--12--|    repeat from start
--0-------------------------|      but continue after [IV] below
--0--2--4--5--7--9--10--12--|
--0-------------------------|
----------------------------|
[IV]
--|----------------------|----------------|
--|--0----1----3----5----|--5------5------|
--|--0-------------------|-----5------5---|
--|--0----2----4----5----|-------5------5-|
--|--0-------------------|--5------5------|
--|----------------------|----------------|



----------------|----------------|----------------|
--5------5------|--3------3------|--3------3------|
-----5------5---|-----3------3---|-----3------3---|
-------5------5-|-------3------3-|-------3------3-|
--5------5------|--3------3------|--3------3------|
----------------|----------------|----------------|



--------------------------|--------------------------|
--0------1----1/-3----3-3-|--0------1----1/-3----3-3-|
--0-----------0-----------|--0-----------0-----------|
--0------2----2/-4----4-4-|--0------2----2/-4----4-4-|
--------------------------|--------------------------|
--------------------------|--------------------------|



----------------|----------------|----------------|----------------|
--5------5------|--5------5------|--3------3------|--3------3------|
-----5------5---|-----5------5---|-----3------3---|-----3------3---|
-------5------5-|-------5------5-|-------3------3-|-------3------3-|
--5------5------|--5------5------|--3------3------|--3------3------|
----------------|----------------|----------------|----------------|


----------------|----------------|----------------|----------------||
--7------7------|--7------7------|--5------5------|--3------3------||
-----7------7---|-----7------7---|-----5------5---|-----3------3---||
-------7------7-|-------7------7-|-------5------5-|-------3------3-||
--7------7------|--7------7------|--5------5------|--3------3------||
----------------|----------------|----------------|----------------||
Return to start and play phrase ending with [II] 2x
then end 2nd time with harmonics on 7th and 12th.