Picasa - How to use Graduated Tint to darken one side of photo.

Howto use Graduated Tint to darken one side of photo.

1. Rotate photo so side you want to darken is on top.
2. Use Graduated Tint adjusting three controls
   
   - Amount using default black colour.
   - Feather to blend in shading.
   - Position by moving small cross to where you want the darkening to reach
   
   to achieve desired effect.
3. Save before rotating to original position otherwise darkening will revert to top.
   Note by saving a copy of original photo is made before all edits are written to image.

See example annotated Youtube slideshow below.