I iron mine and also glue the binding prior to sewing. That really helps in keeping the binding even on both sides. ironing is key, both front and back prior to binding.
Originally Posted by
MadQuilter
I took a class at the LQS for double-mitered binding and it helped me greatly. One of the issues I still have is the inconsistent width from the front to the back. I want about the same amount of fabric on each side. I sew mine down by hand for the most part so I am not trying to sew through all layers in a ditch.