Oh, I don't have a clue, I just went followed Biondi's theme of winter, and somehow I ended up also making a Spring time elf girl... You can make whatever you want to as a sketch, and Biondi will do the lineart while I do the coloring. My sketch is ready to lineart, and Biondi's is linarted and ready to color at anytime (coloring is always the longest process). There's no rush, just make something you want to have fun with 