Love your blocks! Personally, I would consider redoing the last one. I think the applique peces will be a problem in the future -- even if not frequently washed. As time-consuming and with as much skill it takes to construct the Dear Jane quilt, it will be a quilt that will get passed on from generation to generation. You certainly want it to hold up to the test of time. You could use either the freezer paper, starched-edge or "glue down" method and then use the stitch you used in the first one if you want it to look decorative -- or choose another stitch of your choice. There are lots of online video tutorials to help you out with any number of applique methods so you should be able to find one that you are comfortable using. :wink:
I hope I didn't overstep the line with my comments. I don't mean for them to be rude or hurtful in any way. :| I'm sure that whatever you choose to do your quilt is going to be beautiful!!! :thumbup: