Do it right.... post the cabinet down the hall in another room with a friend and a pair of headphones. Use a better mic. A 57 sucks. Thats right, sucks balls so bad that you'll never get the sound you are looking for with that mic. (disclaimer: probably never)
But, after you;ve decided on a better mic, or the same shitty one, turn up your monitors, have your buddy move the mic around close, far, in between, near the edge, towards the center, to the side of the cabinet, behind the cabinet.... etc... when he finds something you like, you say WHOA FUCKER on the talkback and he doesnt move. You go in there and get the mic setup in that exact postition, record a couple tracks, if its not there yet, keep going.
You can also get a very nice sound if you have a totally dead or almost totally dead room and back the mic back about 2-3 feet and get more of the entire speaker in the perspective. But this does require a dead room or a GOOD room which we generally dont have.
This is the 1st step.