Love the comp and perspective here, Bill. Nice sepia toning. Looks like the lighting was a little harsh; I'd like to see more detail in the highlights of the cacti.
Bill, Cool perspective. I'm debating the small cactus head at the bottom-it kind of looks clipped and gets lost in the vignette. I agree w/ Christopher and might tone down the right cacti a little if it were mine. Nicely done.