|A small but (hopefully) useful technique. To help even out gathers, drag an awl between the easing lines back and forth a couple of times. You'll be amazed at how even and straight your gathers turn out. I use the back end of my tweezers, not having an awl. I used this technique when added yokes to a night gown. See photo.
Note - I cannot take credit for this tip, but I cannot remember where I picked this up either. Apologies to the source.