When people start looking into cosmetic surgery, they usually begin with the one feature that bothers them most. For some it's the eyes, for others the nose.
Then, somewhere in the consultation, the scope tends to grow. You hear that "doing the nose as well would bring more harmony," but it's hard to judge in advance whether that holds true for your own face.
So we applied eyes only, nose only, and both to the same face.
Eyes only

A double-eyelid crease appears and the eyes become more defined. It's the first place people look on a face, so the difference is immediately visible.
Nose only

The bridge stands up and the tip is refined. From the front, this change shows mostly through shadows, so it feels smaller than the eye change.
You can't immediately tell which feature changed, but it's the kind of change that makes the overall impression feel different.
Both changed

Combine the two and the centerline of the face pulls together, making the impression read a bit more sharply.
Side by side




In frontal photos, the eyes read larger
In this comparison, judging from frontal photos, the eye change looked bigger.
The nose shows its shape better in profile. Looking only at the front, the nose change can feel smaller than expected; looking only at the profile, you might undervalue the eye change instead.
So when choosing which feature to address, it's worth factoring in the angle you usually see yourself photographed from.
The trap in the word "harmony"
Changing both together can indeed look harmonious. But that doesn't mean both features are needed right now.
- If one change alone delivers the impression you wanted, the rest can wait for a later decision
- Doing two features at once means overlapping recovery, and if you dislike the result, it's hard to isolate the cause
- A large change all at once can also leave you feeling that "this doesn't look like my face"