Good
You got some rhythm. I am also a heavy metal drummer, and fourteen years old, and in a band, and i know those double bass pedals tire you out after a couple minutes of rocking out. I know it's pretty hard. I'm trying to record my own stuff, by I have no recording equipment. I plan on getting a mic a mic cable, then attaching that to an amp. Then you can connect the amp up to a laptop or recorder using a headphone jack and a wire. It's not that difficult to get a decent recording, even if you have crappy equipment.
Right now, I'm just using FL Studio, which is really hard to make metal on, for me at least, because it's hard to mix guitar and drums together and make them sound nice.
Anyway, go listen to some of the crappy music I made. I would appreciate it.