Thrash Metal

I've played the guitar for about 1.5 years now, and my heart lies with thrash (exodus, slayer ,early metallica etc.) but I learned on my own with nothing but a computer to get me started. I play a bunch of stuff but I can never get something I think is gold written. Plus I can't get a sound I'm satisfied with. Any help/input would be greatly appreciated, thanks,
Ethan

Kind of a broad question....what exactly are you asking to do?