To darken grey hair, use Burn Tool with midtones and 20%.
To remove wrinkles, use Healing Brush. Alt-Click on nearby good spot and then paint over the wrinkle.

Use Control-J to get a new layer to make these corrections.

1. Original photo size 800 x 537

2. Desired banner size 760 x 200

3. Resize phot0 to 760 x (510) (constrain proportions) — A

4. Resize photo to (298) x 200 (constrain proportions) —- B

5. Resize photo A to 760 x 200 (do not preserve aspect ratio) — A2
6. Copy and Paste photo B on photo A2 —- A3

7. Use smudge tool (healing tool) in Photoshop to blur the joint. —– A4, final product, 760×200.

8. See free2blog.com/trekker/ for the image header which replaced Kubrick’s default blue banner.