(couldn't hurt)
the main problem you are going to encouter is outside noise. the best thing you can do is what my cousin did. he built a 4ft x 4ft x 8ft box, which he took some foam and soundproofed. obviously, that may be a little difficult. my reccomendation is to try and eliminate as much outside noise as possible, and don't put the computer mic too close to the amp. it will overload the mic and it will come out unclear and fuzzy. in all likelyhood, you're not going to get a professional album quality recording, but you'll be able to make a decent sounding one.
To improve technique and of course trying to keep all as clean as possible. I know my own limits and speed limits and so on I never play anything I'm not capable of. That wouldn't make any sense. After three years of playing I tried to play everything as fast as possible and that sounded, I would say, like shit, and I didn't realize that if I'd play bit slower things than I was capable of playing then everything would sound much better.
--Aleksi Laiho - Advice to Play By
--Aleksi Laiho - Advice to Play By
