Step 01
Take the Photo Level
Face the camera squarely at eye level, arm's length away or further, with your eyes open normally and no squinting. Head pitch and camera height change a tilt reading more than almost anything else.
Step 02
Run the Reading
Upload the portrait and send the prompt. It reports the opening, tilt, spacing and lid type separately, with the cues behind each and any borderline pair it cannot separate. If the photo sits at an awkward angle, correct it in the image editor first.
Step 03
Re-run and Compare
If a result sits between two readings, take a second photo in the same light and run it again. A shape that survives two photos is worth acting on; one that flips between them is the honest answer.