My Suggestions...
Well I think I might be able to help out with this song:
First see if you can increase the tempo a fair bit, as most Techno songs should be quite fast, usually if they are too slow it's hard to really enjoy. Anything faster than 135BPM or so should be good.
Second up the bass strength some more, it's hard to groove to and enjoy Techno if the base sounds sappy or weak. Other percussion intruments could use some more as well
and Third, try to have some effects for the main melody, as well try to experiement with multiple 16th notes and other strings of notes, as well see if you can give the synths some more energy and control over the song, making the main focus of the song, as well as doing many different kinds and styles.
I hope I helped, I'm still new to making music myself as well, but I hope we will both improve over time.
P.S. what tracking program do you use? I'm just curious as to what kinds people use, I use Mod-Plug for now, it's not bad for now but I would like to use something advanced in the future like FL or Renoise.