The synths are generally too basic and bland, they need some sweetening effects. Reverb/delay, chorus, phasing, etc. This is especially apparent on the sine waves and the lead which has a solo later on in the track. That same synth is detuned a bit much, doesn't match the song. The piano has too much high frequency for my liking, that high ringing sound bothers me. It grates on my ears, especially when its the main focus. The opening arp is descent, but could sound much better with more effects. I really like the arp that starts when the drums come in, it has some depth too it.
The drums need some work. The beat is generic techno, hardly any variety, and not very interesting. The drums definitely need more attention in terms of EQ, processing, and variety. I suggest listening to some songs by more experienced remixers here on the site, for example, bLINd does a lot of trance. Listen to how his drums sound, see if you can try to get yours to sound similar. Plus, there are tons of tutorials out there that can help.
So basically, I think you're biggest problem is mixing at this point. I think the sounds are there, and the structure works, you just need to work on mixing skills. The best way to do that is to just keep making music and getting feedback. It's also a good idea to listen to songs in similar styles by more experienced people, here or elsewhere. I suggest listening to WIPs on this forum and reading the feedback, see where other people need improvement.
I hope I wasn't too harsh, I think what you have here is a good start. I hope my feedback helps! Keep at it!