I think Fernando gave a pretty constructive comment there !

I've listened to your track and I pretty much feel the same way about it as Fernando.
You should start with 03:40 and build it up really gentle....Not with a very loud and too clean bassline at 0:37. I also think it would sound way better if you EQ the sample you've used for the "melody". It's also too loud....Maybe a little more cut off should do the trick.

Please forgive me, sometimes it's hard to discribe how you feel about something in a language which is not your native one.