Nice. Simple arrangements for simple songs.

About the only thing I might suggest is, solo the guitar track, listen to how much (or little) reverb there is, and roughly what size room it is in, then, on small intimate things like this, try to match the vocal reverb to the instrument reverb.

Think of it this way... you are trying to give the impression that someone is standing there with a guitar and a bass player, singing the song. So, you are all standing in the same room. Ergo, the same reverb characteristics. So now, the reverb DEPTH becomes a 'distance' parameter. The more reverb, the further back in the room you are standing.

Thing is, maybe the bass player is standing behind you a little bit, but that guitar and you are up front, center stage. So be careful to not push your vocals deeper into the room than even the instruments.

Panning and reverb especially, think of them as a way to paint a picture. Use them to place your players where they would naturally stand if they were on stage, and the believability of the mix goes up an order of magnitude.

Of course, nothing to stop you painting an abstract picture, or an impressionist picture, but if you are shooting for realism, have a care with that reverb! This sounded like the room was too small to be that loud in the mix. If you want wet, make it bigger, or simply dial it down until it become just a bit more than dry...

But you are definitely going in the right direction! Maybe next time, add a string pad under the guitar for the middle section, drop it out at the end, you've got a full arrangement with simplicity at its heart..!