Pretty good! I feel like your melodies could have been more coherent. I can hear a few notes that sound off-scale. The piano is dark and evil. I could have cut off the tail of that kick sample (and cut off the high frequencies). Also, your bass doesn't just have to be a sine wave. You can layer another wavetable on top of it and low pass it. It'll create a much fuller sound.
Good work so far though. Keep it up!