Your hair looks REALLY heat damaged, (it looks just like mine before I grew it out) so it's going to be harder to maintain curl definition.

Things that helped were curl enhancers, like alagio curling balm or the aveda be curly. You can also try turning your ends with a denman brush to curl them, if it will work.

But I won't lie, snip snip! Your hair will curl much more. Because judging by the pics your roots look tighter and your ends look straight.
Lady Hasytal in the Land of Product in the Order of the Curly Crusaders

"Trust is knowing your SO would do the right thing in the face of strange vagina." Nej