1.)Place your knees on the ground
2.)Place your hands on the ground
3.)Place your nose on the ground
4.)Place your forehead
The thing, which is most important, will be place last. And when getting up from the prostration one should follow the exact opposite order of going into it, starting with:
1.)Lift the forehead
2.)Then the nose etc…
Usually these two things are placed and lifted simultaneously which is also correct. But if one decides to keep consistency in order then one should lift the forehead, nose, hands, and the knees respectfully then one should stand straight.