So, I finally managed to finish something and have posted it here:
http://chipmusic.org/megamantra/music/v-for-voxel
I'm a complete and utter noob - I'm new to tracking, I'm new to chiptunes, I'm generally new to making music. What I've made here (which is rather short, I admit) sounds pretty decent to my ears, but I have no idea how they're going to sound to a random stranger who's hearing it for the first time, so please; tear this thing apart under the condition that you tell me how to build it back up again.
I'm working with Famitracker, so I might as well throw the .ftm at you as well:
http://www.mediafire.com/?n8y3mgk4h0xnd7e
As I said, criticism, whether it is specific to the song or about using Famitracker/tracking in general, is totally welcome.