Scraps are the first thing I look at in an artist's gallery lol. FFFFF Gryphons. I love drawing wings, and you make everything with wings look gorgeous. <3 I like how you even showed the belt on the ground on the bottom left.
I draw my thumbnails in my sketchbook, which is slightly toothed 60 lb paper, and then I scan those in and transfer them to a regular sheet of printer paper for the final drawing, at the size I'll be painting the original. I then scan that in, and print it out to transfer onto my watercolor paper/illustration board/whatever surface I'll be painting on.