Hi, Oboe's melody is nice and works pretty well with the harmony, though I would consider more variation on the guitar accompaniment pattern. You can combine with some arpegiations on the chord, some sustained chords for 1 or 2 bars long or even a oboe solo can work fine. I feel there are too much notes on the accompaniment and without any variation gets a bit boring...I think with a third of the notes you have on the guitar it can work better. Also the ornamentation on the guitar I find it a bit excessive. The ones in the oboe are all right, since it's the solo instrument, but I think the guitar don't need any ornamentals there.
Also the last 5 bars with the solo guitar sound to me totally disconnected from the previous material, and then modulating in the second bar from the end sounds quite weird. Is there any purpose on that? I would have finished in the bar where the oboe stops playing.
I think with some ajustments it can be very nice 🙂