Rough draft

A decent start.

A couple of things don't work here. The reflections on the sides of the watch are opposite. One's dark at top, the other is dark at bottom.  And the highlight at the upper right is blown out.

Shoot with the camera in the dark, so there is no reflection of the room (such as you have in the left side of the watch. Be careful where you position your reflectors so you don't get the edge that you see on the left.

Try moving your softbox more off axis, so it doesn't reflect in the curved surfaces.

Always make sure the watch is sparkling clean. Use tech wipes (lint free) and isopropanol to remove your fingerprints. Then handle using lint free cotton gloves (such as negative cutters/handlers use).

Keep practicing.

<Chas>