That's really exciting! Let me know how long it takes before the skin turns hard again, each week the time frame should get a bit longer. If you've only had EC for 6 months you are very "luckY" so your healing time should be considerably less than most people's who have been dealing with this for years.
Let me know if they are healed or not, and, if not, how the skin is looking after a week or so. Oh an as for showering with a bag over your head, I guess that's one way to do it, I just avoid letting the water touch my face and it is working really well as well.