Agave Plein Air Sketch

So, I have been trying my hand at Urban sketching as I said a few days ago. I have all my set up right now, but still ironing out the kinks. I found sketching this at a Bus stop here in Tucson, AZ was both fun and exciting but difficult. I need to get used to all the natural and man-made obstacles involved in this process. However, I do love the loose feel of this sketch. And I really wanted to capture the idea that this Agave had some pink in the points which I do not often see. Hope you enjoy this new adventure I am on these days.