Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Please change the person's expression to happiness. Portrait of a man by Greg Rutkowski, he is about 40 years old, short copper hair, attractive, military composure, younger brother vibes, expression of sorrow and disbelief, he is wearing futuristic tactical gear, highly detailed portrait, digital painting, artstation, concept art, smooth, sharp foccus ilustration, Artstation HQ.

### Response:
'Portrait of a man by Greg Rutkowski, he is about 40 years old, short copper hair, attractive, military composure, younger brother vibes, expression of happiness and disbelief, he is wearing futuristic tactical gear, highly detailed portrait, digital painting, artstation, concept art, smooth, sharp focus illustration, Artstation HQ.'

### End