Rise from Ruku with composure. The source's commentary records combining Tasmi' and Tahmid for an Imam as one reported/preferred view and for a solitary worshipper; the follower says the Tahmid.
Then:
• say Takbir while descending;
• place the knees, then hands, then the face between the palms as the Sunnah sequence;
• prostrate on the forehead and nose with tranquility;
• recite سُبْحَانَ رَبِّيَ الْأَعْلَى three times as the minimum Sunnah perfection.
The knees-hands-face order is a Sunnah method; a different limb order does not by itself invalidate Sujud.