67 headliner ...puzzled

X2 what he said,I have done 3 69 dart headliners,installation is the same for 67 68 69.Did you get your bows yet they all go in a certain way,you cant just put them any way.Also If it was me I would not install until its 70 outside and the car has been painted. In the past many years back I would leave my interior in tack than get pissed off that the painter would get over spray on things no matter how good he tape things off.Now I STRIP out everything.mine looks wrinkly just a test fit.I can never get them perfect at first but as time goes by it shrinks tight.