0:00 That phased/flanged pad is a little too loud for your mallets, which I feel could have used a variation every 4th/8th measure.
0:15 Bass sounds good. Could probably use an obvious transition to introduce it into the soundscape. Also could use a little more volume.
0:23, by now the piano is starting to sound stale, too loud, all the same velocity, very dry, and so is the progression in general.
0:34, felt the theme didn't need to be copied and pasted again here without some variation.
0:42, ditching the sweepy pads and grabbing that gated synth was the right choice, but this transition is a little disjoined, as with 0:51 where we're left with a piano run.
0:53, the musicality of the track as a whole is destroyed. Clip distortion is so that I can't really cleanly make out anything other than a general idea of what is happening when. When you do these mixes, I recommend leaving a good 3-6 dB of headroom. Your mix will not go from garbage to great, ever, but it certainly won't even get to good by applying master FX on a mix that is already red-lining on 0+ dB.
So, beyond working on varying your writing, throwing in the occasional fill, etc., I can't recommend anything other than to check out some tutorials in your chosen genre. Still, good chord progression. I can definitely see in you the potential to make great music. Your runs are something we rarely see in trance. Look forward to hearing more from you. :)