Finger-press, finger -press finger-press!!!!!!!!!!! i learned the hard way to finger press all pieces before I try to applique. No one told me to do this and it makes life so much easier when you applique and don't forget to make sure all your pieces are cut on the bias.....no trouble with curves then. The fabric has a memories and turns under so much easier. I also, use a toothpick to turn under and not the needle. I keep the toothpick in my mouth and it is slightly damp and turn under is so much easier but remember..........finger press!!!