This painting was based on a Rose my daughter photographed, at the Wilson Botanical Park, near where I live.
It's painted in the Old Masters style of grisaille, with colour washes to give good depth and transparency, in the colours.

The Old Masters style of Grisaille of a toned under-painting followed by applying many layers of Transparent Colour, finally gives a glow to the finished painting, that modern techniques cannot recreate.

Yellow Rose Flower Original Oil Painting by Garry Purcell

Artwork Name: Yellow Rose Flower
Artist: Garry Purcell
Medium Used: Artist Grade Oil Paint
Support Type: Gallery Wrap Stretched Canvas (Staples are on the back of the frame.)
Canvas Size: 50.8cm x 60.9cm x 2cm (20"× 24" x 5/8")

Yellow Rose Flower Original Oil Painting by Garry Purcell
Yellow Rose Flower Original Oil Painting by Garry Purcell

Artwork Name: Yellow Rose Flower
Artist: Garry Purcell
Medium Used: Artist Grade Oil Paint
Support Type: Gallery Wrap Stretched Canvas (Staples are on the back of the frame.)
Canvas Size: 50.8cm x 60.9cm x 2cm (20"× 24" x 5/8")

A single Rose Flower with a mottled green background.