After joining YC I have quite a lot of experience playing my own pieces now, though only by recording with only myself at the piano without an audience.
Yeah this is exactly why I record my own piece with my own interpretation. I played my ( ) piano piece back in 2012 because it was to be submitted to the Exam Bureau and I found the trill of the Sibelius rendition disgusting, and the rubato was very unsatisfactory, so I recorded the piece myself. Even though it's full of slip, the recording is full of emotion and honesty, and I heard from my teacher that the piece's recording was played in Teacher's Seminar and those teachers were in awe of my playing which is full of slips haha.
Playing my own piano pieces gives me a chance to polish the details further because music play by hands is much different than Augensmusik or Öhresmusik. I can prove this piano music can really be played. Also, even though the piece once composer is not belong to me exclusively, the interpretation from the original composer is important to know.
I have also played through all Vince's @Thatguy v2.0 12 Piano Preludes. He did mention I brought in something he didn't think of before (at least not ruining his pieces haha). Actually when I receive reviews of my pieces I always discover something I have never thought of.
No one ever plays my pieces haha, tho @PCC once arrange my piano piece Moment Musical for Organ. I would be excited if anyone plays my pieces, especially my Piano Sonatas, haha!
Henry