Sneaky preview of my 2018 blip calendar

Every December I collect my favourite blips, one from each month, and use them as the artwork for a calendar of the year ahead. I loved the photo used for January on my 2018 calendar, even though it didn't make the cut as my blip of the day when I originally took it. The staircase shown is in a tenement block near Morningside Road in Edinburgh.

Meanwhile, marking continues...