after I've stitched the seam and before I open it out I press along it to set the stitches then open out and I normally press to one side (if its dark and light fabric) I press towards the dark, I also press the seam away from me less chance of catching any fabric - hope this helps a bit - 'only' a rag flannel quilt!! flannel is hard to work with so well done you - don't forget to post pictures.