Besides having numerous problems involving my computer and the lack of memory that SAI required to create this piece (I have 4 GB but some how I still ran out of reserved memory xD)
The largest file was around 1.07 GB, and took almost 30 minutes to render.
I had the sketch for this uploaded to my tumblr almost 2 weeks ago but didn't actually have time to complete this because of midterms, labs and homeworks all jumbled together in one large mess in the span of a week.
So when I finished all my midterms, I pretty much completed the coloring, backgrounds and lineart in the span of 3 days (instead of my usual sit-through-4-to-8-hours routine)
sketch: 1 hr (ages ago but posted to my tumblr here: [link]
lineart: 1 hr (1st day)
coloring: 3 hr (2nd day and worked really late at night, didn't finish until 5 am).
backgrounds: today, 1 hr (3rd day)