Well, these certainly aren't "very easy"... XD However, once you see the pattern, you can more or less make out how to go about folding them. For example:
1) Look at the shapes in the material. They are bi-lateral - if you draw a line vertically down the middle, the two halves are mirror images. So, the number of times you fold it may actually be half the amount you'd initially think.
2) Not all of them are one whole piece. The elephant mask looks like there are at least three folded sheets stuck together (you do not have to use glue, either - you can make a 'lock' out of folded paper, but it can tear easily)
3) To figure it out, just imagine the whole mask flattened, and plan out how you would fold the sheet to get the lines. It takes some getting used to, and this is not easy (not at all), but that's how I imagine you'd approach it. I'm not an origami artist, though, so I might be wrong... :P
1) Look at the shapes in the material. They are bi-lateral - if you draw a line vertically down the middle, the two halves are mirror images. So, the number of times you fold it may actually be half the amount you'd initially think.
2) Not all of them are one whole piece. The elephant mask looks like there are at least three folded sheets stuck together (you do not have to use glue, either - you can make a 'lock' out of folded paper, but it can tear easily)
3) To figure it out, just imagine the whole mask flattened, and plan out how you would fold the sheet to get the lines. It takes some getting used to, and this is not easy (not at all), but that's how I imagine you'd approach it. I'm not an origami artist, though, so I might be wrong... :P