I don't think you could have done it worse if you had tried to. Trombone sounds very nervous, everthing is too stiff and formal, no life in it. Euphonium cadenza very nicely done. I suppose he thought it did not matter much, he came on later. I compliment you.
Cornet cadenza a good show.
Allegro too slow. Those horns are badly out of tune, Mr. Conductor. Soprano made a moderate attempt, many wrong notes, though. From bar 26 to end of movement baritones, trombones and basses were terribly across, so you can imagine what it sounded like. That could be vastly improved by taking each section separately.