Not to toot my own horn, but ...
I did a review of the Feather AC. You should check it out for two reasons ... first, I attached links to just about every major "Feather AC" thread to date, including some pretty in-depth comments by Joel, and ... second, once you get the hang of your Feather, you can add your review/comments too!
It's kind of hard for me to help with specific advice, because my frame of reference is real straights, and not the DEs. But I guess I'd suggest you pay attention to having very light pressure, having as little angle or elevation to the blade as possible, and making sure to putt the skin taught.
Mighty and moody ... yeah.
Be there or be square. Only I can do both!
I've got a cat named Beefeater and a dog named Beefeater, and two goldfish called Beefeater and Beefeater. There's Beefeater my hamster and Beefeater my horse, and my piglet, known as Beefeater of course.
Veteran of the Great Irisch Moos Campaign of 2008-09