Unfortunately it starts further back with the player, gtr, then amp, mic etc.
It player, gtr and amp are all working well together, it's difficult to screw it up.
That being said, the common wisdom is:
- lower wattage is better than higher wattage
- Amp volume is only as loud as it needs to be to get the tubes, and cones to their desired fuzzyness. (more than that and the sound starts to collapse in on itself, less than that and the guitarist will cease to function properly)
- At least one mic should be close up to the grill.
- When tweeking the amp in the room, it's better to listen to the sound down at the height that the mics are.
- Watch for and eliminate reflections off the floor

I'm sure others will be along shortly to add to, clarify better, or debate the llst.
stay tuned.

go to this post. this guy is like an encylopedia on recording distorted guitars. you will probably want to put on a coffee as it is a long read, but well worth it.

[[url=http://[/URL]="http://www.badmucki…"]Slipperman's Recording Distorted Guitars From Hell[/]="http://www.badmucki…"]Slipperman's Recording Distorted Guitars From Hell[/]

Back off the distortion for rhythm guitars - say 75% instead of 100%. It'll really open up the sound and they will actually sound bigger that way, and clearer, too. You must experiment, but once you figure a few things out they'll stick with you.

In addition to the above, I'll throw out that studio recording speakers/amps are usually pretty small. You get the distortion at a much more managable volume. Big amps still for live shows. In either case it's a matter of finding just the right saturation/voltage for the valves.