how do I apply windlight to my parcel?

[RJaNator Dorance]

How do I apply a windlight setting to my parcel so others see my parcel they same way?

[Lindal Kidd]

And an addition to Alwin's answer!

The Firestorm viewer does have a "parcel Windlight" feature, and you can use it as Rolig says to apply a custom Windlight sky and water to your parcel.

However, ONLY other people who have the Firestorm viewer, AND have set their preferences to view parcel windlight settings, will see the lovely settings you have made.

When I apply custom settings for my land, I put out signs telling people which settings to use to best experience the area.

[Rolig Loon]

Windlight settings generally apply to an entire region, but you can use the Firestorm viewer to apply them at the parcel level.  See http://wiki.phoenixviewer.com/fs_windlight for details. 

[Alwin Alcott]

a little addition to Rolig's answer:

 

everybody can use his own settings, your landsetting doesn't force others to see it as you want.