The ancient pyramid origami by designer Jo Nakashima is definitely a feather in the cap for every budding artist to achieve. It does need a lot of practice and precision but it is truly worth every bit of time and effort put into its creation. It may look a tad bit complicated but if you're aware of the folds, the entire design is not that difficult to attempt.
Check out this link to know more about how to make an origami ancient pyramid just like Jo Nakashima.