Cute harmonica in the beginning. Guitar sounds a bit 'boxy' ?
Vox is nice and dry, up front. Mix is very unpretentious, straightforward.
Check your meters though, are the instruments peaking ABOVE the level of the vocal's meters ?
If so, which one is actually much, much louder ?
You could put a touch more verb on the vocal, but beware, your very relaxed and soft mouth approach to forming the words, and pronunciation ... will quickly muddy with verb, but there's room for some on all the instruments ... but just a touch, because it builds up on each instrument.
What you want to do with reverb, is put a tiny, tiny bit on each instrument, and finally put some on the whole mix, to 'put everything in the same room'.
Oh man ... you gotz to have some backup harmony vocals in here ... I'm tempted to sing them for you right now.
I like the simplicity of this song.
At 2:33, I love this totally exposed vocal, that takes a bit of courage eh

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Deborah sounds HOT dude !
Your vox gets a touch lost in the lead in sentence to the last chorus.
You should end it at 3:18 ... the last two 'oh deborah' are overdoing it and tax the listener's patience a bit, just put the harmonica ending starting at 3:19.
PLEASE retrack most of this in it's entireity and repost ... because the next time you do this it will be much, much, much better, and you don't have far to go to make it a lot, lot better, but keep it simple, because that's the beauty of this song.
The vocal might should be sung with a bit more energy, not much more, just a little bit. As if you actually see Deborah out the window, and are singing to her.
You retrack it, I'll add backup vocals to a 192kbps mix, and a fiddle solo ! If you want
Thanks for sharing and reviewing others, welcome to the board songwriter !