This paper is a Cachet Earthbound Sketch Book.

They're awesome. I have one that's bound like a regular book and then another spiral-bound one, and both are the same wonderful paper.

Also recommended: Pitt Pastel Pencils (which I used for the lilies -- one umber-colored, one "sanguine" red-terra-cotta colored, and one white) and Wolff's Carbon Pencils, which are PURE LOVE.