The Figure M is difficult. There's some inverted pushout and a lot of precise rudder usage required. I've been practicing them at the field with my Atlanta and can get a reasonably good one, but not perfect. Of course, there are actually four rolls that make up this maneuver, each on a vertical leg.

Beginners, don't try this at home:

Coming from the left, you go vertical (half loop) and execute a 3/4 roll (rolls to left in this example). The top of the airplane is now facing you, so you perform a stall turn at the top. You now do another 3/4 roll on the vertical downline and the right wing is now pointed at you. Pull up like normal into a vertical line (half loop) and do another 3/4 roll. The belly of the airplane is now facing you. Perform another stall turn, except with the top of the airplane is now facing away. Do another 3/4 roll on the downline and the right wing is pointed at you again. Pull out into a horizontal line like normal.