First off if the high temperature in the tank is only 80 F you need to get that up or you risk getting a respiritory infection. You also need to know how high your humidity is. During shed it should be around 70%. One thing I do with my snake is take a wash cloth or towel and soak it with warm water and squeeze out most of the water then let the snake lay in the moist towel for about 15 minutes. When the skin comes off in pieces like that, the skin is dry. You can also add a humid hide in his tank so that he can go in there.