Delft and Milk Glass

I've committed myself to focus on portraits and florals during these cold winter months. No more plein air painting for me until the temperatures hit the upper 20s.
So with this painting instead of my favorite dark backgrounds I played with white on white with the additional challenge of trying to use natural light to create a dark, a light, a bright, a dull.

"mello yellow"

I love yellow tulips. I love their warm and inviting color. And I love how they remind me of spring. Unfortunately a few hours after receiving 2 dozen yellow tulips they began to bend and snap 4-6 inches along their stems. Maybe because their buds were large in comparison to their skinny stems??? The following morning I clipped them and put them in water goblets. I think maybe I should have used a different color cloth instead of this khaki green. Any suggestions?
"Mello Yellow" oil on linen 24"x12"