Try this:
http://nsrca.us/judging-sequences/judgehome.html
On that page you can download some pretty cool PowerPoint presentations that take each figure and shows the judging criteria for it.
There are also "Aresti type" drawings there as well, but Pattern "Aresti" sometimes is a bit different. The PowerPoint presentations are the way to go. Unlike IMAC, in pattern it is the WRITTEN narrative that is the rule.
Also, there are some significant differences in judging criteria. For instance, centering is required on all center figures. There is a box, and deviations in pitch, roll and yaw are downgraded at 1 point per 15 degrees instead of a half point per 5 degrees.
This is a BIG difference. For instance in pattern you have to over rotate a roll or spin by 160 degrees before you zero it (assumes no other errors). IMAC gives you 90 degrees and then that's a zero!