Love the angle, flowing lines, overall comp. I might remove the tiny highlights about 4/5 down; they may be spiderwebs or just dew. I agree with René about the NDGF.
At first I thought, where did Julie find such a cactus in the midwest? Then I read the caption & realized that she must be at Missouri Botanical Garden (www.mobot.org). Come to California, Julie, and I'll take you to see them in the wilds of our lovely deserts.