Here are two of my custom survival maps ready to go.
Huge Custom terrain maps ready for exploration and can be played in creative or survival.
Not going to spoil the maps just need to play and try it out.
Here it is. And feel free to ask any questions.

Veruix Link: http://www.mediafire.com/file/ccja6dcxvfov6pk/Verix.mcworld

Floating Worlds Link: http://www.mediafire.com/file/ruzrzc8kme35g37/Floating+Worlds.mcworld