Very good!!! It doesn't sound that bad though! :P According to Schoenberg (if I remember well) in 12 tone music we must eliminate every melodic movement that could remotely lead to a tonic center. At some points I seem to listen something like an extended tonality. Of course this is theory, while your composition sounds good!!! It sounds like 12tone, it uses very nice neoclassical rhythmic motives. Yes...very good!

I had done something once in 12 tone. You can listen to it here if you like:
https://steemit.com/dsound/@laviq/20180311t192545556z-cassandras-theme