Hi all. I have a 2011 LS460L that I purchased with 188,000 miles on the odometer. The front fascia is drooping a bit and doesn't seem attached as securely as I believe it should. Does anyone have any experience removing the nose of the car? I haven't been able to find anything on YouTube university. Are there clips that mount the nose to the frame of the car? Any help would be much appreciated. Thanks in advance.

If you want to remove bumper cover you need to remove it as follows:
Remove front wheels
Remove plastic cover under the engine
Remove wheel arch liners
Remove plastic covers in the engine bay
There are several screws holding the bumper cover to the structure around the radiator.
Dealer is quoting 4 hours of labor for that job. Not that big of a deal, just time consuming. Also make sure you protect your headlights before removing it. Regular masking tape will do.
In this video you can see bumper removal on a Toyota, but the idea is the same.

"Remove wheel arch liners" I doubt if that is necessary. Just loosening the liners in the front should be sufficient.