Pitch Black

The depths of my mind
you do not want to know
for it is quite disturbing
I can't begin to show
My mind is pitch black
with claw marks here and there
so you can see the demons
that haunt me everywhere
My thoughts are tied with an anchor
that drags me deeper inside
My heart is all shreaded
from the thoughts that reside
I'm tortured you see
from inside and out
with no escape in sight
No freedom tonight

I received a very nice and helpfull critque about the lines
(My mind is pitch black
with claw marks here and there
so you can see the demons
that haunt me everywhere)

The critque was to use puntucation or something, but over all very good.
Ok this is the help I need, I'm not good where puntiacation goes. If you could give me more details or ideas I would love to hear them.
Thank you