30 minutes, hm?
Lest see what 30 minutes can bring.
The bassline is good and catchy, and really, to be honest, if you wanna be serious about making dance or trance, a catchy bassline or a decent melody is all you need.
The rest of the resonance synths you have sound great, as I really like the sound. To get better, listen to some famous artists... Human Evolution, DJ Tiesto, Milk Inc. etc. And even some of the trance artists around here on newgrounds can help you a lot. Listen to how they arrange the song, that will give a good idea of when you break the drums in and out, how loud to keep the hi hats, where to kick in melodies, etc.
Good work! I was not even nearly this good when I first started =) Keep it up! Check out my music sometime?