I wanted to do a second version where I guilded only the ends of the petals.
Using Photoshop 7
Selected lily with a combo of magnetic lasso, quick mask and feathering.
Pasted a copy on a new layer.
Filled in COLOR mode with black to create a B&W version of lily.
Applied CURVES to just that layer where the curve values looks like a "Z" on its side. This sort of resembles a metallic tonality.
Applied a COLOR OVERLAY of a deep orange/brown and set that blending mode to COLOR (this is done in the Layer Style dialog box.
Used Layer mask to shape gilding around just the ends of the petals.
Duplicated this layer and went back to style and changed to LINEAR DODGE.