1:55 - WOW. That came out of nowhere. I'm listening to piano, and then suddenly a sweep comes in. Maybe you can fix that suddenness. Then afterwards, you can add some effects to it so that it isn't overpowering the piano so much. I'm sure you can do it though.
Also, perhaps resolving the piano clashes in it will make it more pleasant to listen to. That is, unless they mean something. In that case you should modify them so that it's not just a random clash, such as a chord with C, C#, G#, and A (in a choir song called Snowflakes >.<).
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Lewis is a "piano expert", I can tell. He knows what he's talking about; yeah, that's right, I heard Waterfall of Beer. xD