Just a Weed?

I took this at the Consumnes River Preserve south of Sacramento, CA last week. This is a common flower I see in disturbed areas about the same time as wild mustard is showing in the fields. Not real showy but the flowers are pretty early in the season. I've seen this white one but there are pink and yellowish varieties as well. I thought the dark water BG showed them off nicely. I cloned out a few stray petals along the left margin but other than that only resized and sharpened. As you can see from the techs, I wasn't set up to photograph flowers. I was after ducks, but I couldn't pass this up. Your thoughts on better processing or composing would be appreciated.

Tech Info

Canon 60D with EF 70-200mm f/4 and 1.4 TC = 280mm
1/1000th @ f/6.3 and ISO 200
tripod