You are right @bleujay lillies always fascinated artists, you can find so many works and different reflections. I like the way how you create your work, you study the object first and as we know in order to give an object 3d effect, you have to correctly reflect highlights and shadows, that is the best with the help of black and white view, then you see all shades of grey too, that helps to put more color or less.
For your painting you have a nice capture of sky with a cloud that you turned from landscape view to portrait in order to place your Lily. That is amazing, thank you for sharing the process of your thoguhts and beauty of lily :)