Glow/Bloom effect
In the same composition, use Select>Color Range>to select the high-lights of the base image. Be generous with the Fuzziness, as detail won’t be an issue. Copy the selection to a new layer (Command-J [PC: Ctrl-J]) and set its blend mode to Screen, which works kind of inversely from Multiply blacks become invisible and whites are added. The result is a simple bloom or glow effect.