Recording of a sketch at the park, albeit not from an ideal angle, but hey 'tis my first try. :P
Unfortunately it's not from the very start (blame my silly mind), but basically, after the pen linework (which took 10min, I checked) (oh the 30min is for the whole thing, including the non-recorded beginning), I did a wash using grey for the shadows, and then started on the different colours.
I don't do the grey wash all the time, but sometimes it helps because after that it's just a matter of filling in the other colours, one at a time, and from light to dark or by colour families since I only use one or two brushes and don't really rinse them out. :P
Soundtrack by Serene at soundcloud, thank you -- soundcloud.com/scribblegiraffe/transpire-ukulele-tune