I dug what's there.
Let the acoustic start the song with just the chord progression then let the electrics join in with the main riff.
A nice slow walking bass line would be cool or maybe something a little gollupy to bring that old western feel out.
That left channel guitar needs some twangy single coil tele love. Sounds like your playing your notes right up on the bridge.
I'd try letting the main riff resolve to a major key for a nice little twist to go into a chorus or bridge part. I was waiting for that, but it never came.