Iron was a problem for me until I saw these two videos. The methods are exactly the same, but there are good tips to be learned.
The first video is from Karen Brown from
Just Get It Done on YouTube. There are good tips at the beginning to help you reduce fatigue at the ironing board. Then she goes into her pressing methods.
(35) How to Iron for Quilting - A Really Good Method - YouTube
The second video is from a Karen Montgomery video, but for some reason I can't find the link. I'm hoping someone has the link and can share it. I think it's from her Nine Patch group (which you need to join). Karen uses a similar method, but she has one more step where she presses the seam open and then to the side to complete the pressing processing.
I couldn't believe how much better my blocks turned out!