The first one is a combination of these.

I used the top band of this as the bottom band so it was more stretchy

http://seevanessacraft.com/2012/08/crafting-on-a-dime-diy...

and the rest, middle open crochet and stop scallop, from this pattern.

http://www.domesticblisssquared.com/2013/09/lacy-scallope...

The 2nd and 3rd is just from the 2nd link but the chain across the bottom made it so it wasn’t very stretchy……maybe if you crochet looser than myself it will be better.