A lesson in patience and a little luck

So I've been trying to practice my art more of recent and the recent lightning storm seemed like a good chance to do that. These were shot with my Canon Rebel XSI, a Sigma 10-20mm lens, and a remote shutter release. The first couple came out okay, nothing to really get too excited about, but the last one made my night. Took me about two and half hours, but I finally got the big one I was hoping for. It was so loud that it shook my apartment, set off car alarms, and I think my heart skipped a couple of beats.