I made several cakes and I'm still struggling to get neat work on the cake covering with fondant. When I cover the fondant, I rolled fondant and cover using the roller then smooth with my hand and then use the smoother (cake baked and covered with butter icing. Tried put the cake inside the refrigerator and with it too). initially it looks good. after 2 hours I see the fondant coming off from the cake and lots of air stuck there. Even though I remove the air and smooth it again, another 2 hrs later the fondant is coming off as before. Is there any technic to do the fondant stuck on the cake?