I think the stairs at the Bourke St entrance to Southern Cross station provide an great photographic backdrop. The horizontals of the steps make anything which interrupts the pattern really stand out, and the strong lines of the hand rails frame the image strongly. All that's needed is something on the steps to provide some interest.
I spotted David as i was out for my lunchtime walk. He was sketching and seemed oblivious as I walked back and forth deciding whether to go for a candid or work up the nerve to seek his co-operation. I decided to ask if I could photograph him as he worked, and he was happy to co-operate. We had a chat and I got a couple of interesting shots before he had to leave to meet his daughter.