On strings.

[Funkeldunks]

This is the thoughts of a shy guitarist.

On strings

Play my thoughts away
Pick the words
My voice can’t say
Perform them proud
To ears that aren’t around
In my mind
I don’t find time
To be someone’s someone
Inside my walls
There are no risks I take

[SpruceMoose]

This is the thoughts of a shy guitarist.

On strings

Play my thoughts away
Pick the words
My voice can’t say
Perform them proud
To ears that aren’t around
In my mind
I don’t find time
To be someone’s someone
Inside my walls
There are no risks I take

The first line "Play my thoughts away" I think lead me in a different emotional direction than what was intended. 
Play immediately sparked an image of happy, fun, bright.. but that tone isn't really what the poem is about and obviously it refers to playing the guitar as we get into later.
Maybe another word could fit in there like Strum? 
 Pick the words my voice can't say is a part I liked and the message by the end of the poem is fairly clear.

[JamesG]

This is the thoughts of a shy guitarist.

On strings

Play my thoughts away
Pick the words
My voice can’t say
Perform them proud
To ears that aren’t around
In my mind
I don’t find time
To be someone’s someone
Inside my walls
There are no risks I take

I think it is worth reading your poems aloud after they are written as this can help with the flow. This poem seems to break down somewhat when the rhythm becomes a bit clunky here:

 "Perform them proud
To ears that aren’t around"

and seems to collapse at the

"someone’s someone
Inside my walls".

I am not sure with such a short poem that they half-rhyme, half-free verse works well here.

Keep going though, as there is something there, and I think it might be useful to expand the poem a little.