I am struggling to learn to press and not iron my quilt blocks. I got some good tips here on how to improve. I think I have ruined many a good job of piecing by doing a poor job of pressing. I plan on checking out the clapper. I also plan to try pressing without steam, as RedGarnett222 suggests. I am working on MSQC's Missouri Star quilt. Not sure if the pressing issue is because I have bias issues, or I continue to do a poor job of pressing. The points and corners are all matching up nicely, but I have some extra fabric (stretched out) that is causing the blocks to not lay perfectly flat.