Minuet for flute and cello

Im undecided if I like this piece. I think i might hate it. The theme is quite annoying. I do like the combo of flute and cello though. 

I like it!  I like the variation you introduce to the melody line at meas. 23-25.  And the deceptive cadence at the end that prolongs the final phrase is a nice touch!

Very nice. I like when simple motives works nicely without extra ornamentations and that's a clear exemple of that.

Also the arrangement flute-cello and the deceptive cadence to extend the closing in four extra bars feels very appropiate.

I don't see anything wrong with this, this is nice!

One minor thing I would change is in measure 21, I wouldn't repeat the same melodic pattern for the 3rd time. 

It is a "unwritten" rule that I learned in music theory. While its advised to not repeat it for a 3rd time, there is nothing wrong with it.