Ok, first thing, don't go anywhere near that 8200 rpm. I haven't touched 3,000 in months.
Read this article for background:
Autospeed - BSFC
Do you have a lot of highway driving? That's going to be tough with the gearing you have. Slowing down it the best option. I like to P&G in a 45-60 mph range when traffic allows.
P&G - the pulse should be in the 1500-2200 rpm range, at near but not quite full throttle. You have a powerful engine, so it'll pick up speed in a short time. Try to time the p&g cycles to maximize the glide, even to the point of pulsing uphill for a long downhill glide.
EM's own
100+ hypermiling tips is a great resource. Also,
CleanMPG's review of the Corolla XRS.
Do you have the built-in economy gauge? If not, I suggest getting a Scangauge or mpGuino for feedback.