James,
Excellent lyrics, progression and implied melody.
From my perspective I'd get out the audio scissors and removed got from
"What do you do
When you've got no more tears,
What do you do?"
I'd also lop the slight "k" from the end of "song" as well as "wrong".
I suggest those things because your vocals are clear, solid and concise enough for the "k" to be all that needs work.
The "got" is a matter of taste but for me it's redundant in the line and the line looks more like I hear you without it.
Top stuff.

Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe