We worked with the hemmer feet this month. Once you get comfortable with where to place your fingers and how to hold the fabric as it feeds through, a good looking hem is possible. I played with a couple different stitches with the cotton weight fabric (floral) and with the narrow hem on the batiste fabric (pale green), created a small scallop.
April's Foot Book - Hemmers
I got a bit of puckering on the scalloped hem because I was using too heavy a thread for the fabric. I've been using Sulky's Blendables 30 wt cotton for most of the pages. Should have used a fine thread...but it was at home and I wasn't! haha
Mini book with pictures of the feet.
Bernina has lots of these hemmer feet. I have only 2 - the 66 and 69.