I think what this piece is lacking is dynamics, which is restricting the piece from conveying the full emotion that is there in the piece. The piano is static, and lacks dynamic feel as each note is the same velocity. it takes away from the emotion that you are going for. the strings also need expression, strings should swell and have feeling to them, they shouldnt play a static velocity. the oboe is decent, but you should balance the strings and piano with the oboe better. if youre having a solo instrument playing, you should bring down the other sections of the orchestra so that instrument can stand out better. I think with some care, this piece can reach its full potential, its just lacking some dynamics to give it more emotion and feel :)